Hydroponics gardening may also be started simply: do not overbuy on supplies, use plastic tubs or children’s swimming pool to make your first grow beds for the plants. Consider expensive sophisticated hydroponics supplies the next step you will take in hydroponics.

Beginners usually find it reasonable to get a “plug and go” hydroponic gardening kit. It includes plant cubes, heating pad, nutrient solution, and seeds. Sunlight and water are the only things that you will have to add in this case.

If you have already decided where your hydroponic garden will be arranged, you may wish to purchase a “grow tent”, which is easily installed within an hour. Its price may vary from $250 to $500.

Thinking about a small greenhouse, take into account that it will need a drainage system and cement or gravel flooring. Also note that the price for a greenhouse may be a few thousand dollars, though the simplest ones may cost only $500.

If you plan to have a medium to large greenhouse with many plants, you will have to control temperature inside. A grow room temperature control unit will be of help in this case. It will turn the blowers or fans on if it becomes too hot in the greenhouse. It may also be used to open and close air ducts. Note that the temperature depends on the number of plants you have.

To provide the normal plants growth it is necessary to install two types of grow lights in your greenhouse – blue and red spectrum lights.

The necessary minimum may be enriched by the more advanced irrigation and drainage system if you become a skilled gardener. The quantity, types, and size of the plants will help you choose what other supplies and equipment you need in your hydroponic garden.

With the lapse of time, an experienced grower needs to have grow light fixtures in his garden, an exhaust fan, a high quality and convenient aeration system, heating mats, a temperature control unit and other supplies.

All hydroponics equipment can be found at a hydro shop. Beginners can also rely on the advice and practical tips of the professional and knowledgeable personnel. Moreover, gardeners will always find people with the similar hobby there to communicate with. 

 Ideal pH for Plant Growth

 Different pH levels are recommended for each and every plant. Attention to research should be done to ascertain the proper pH level for your plant. Findings however have found out that a pH level of 5-7 is safe for most plants, 6-6.5 being the most ideal.

 Be Careful When Handling Chemicals

 Solutions having a pH of between 3 and 10 are usually safe for handling. Caution is advised for solutions outside this range as they would likely be strong acids or bases. Gloves and goggles are advised as a precautionary measure every time you work with any type of chemical.

 Controlling pH Level

 Checking pH levels should be second nature when nutrients are introduced to your solution. When solutions acid levels are observe to be always high, solutions should be changed more frequently. When nutrients are absorbed by the plant, this action makes the solution acidic and leads to nutrient “lock up.”  pH level are signs of nutrient deficiency, be sure to constantly check them. Check your water this may be the cause and not the nutrient solutions.

Various types of pH test kits are available in the market today. Some are fairly accurate with the more expensive one showing an increased degree of accuracy. Litmus paper and liquid pH tests kits used in swimming pools are an inexpensive way of measuring pH. This works for most of the plants, but plants with more sensitive pH reactions require more elaborate ph test kits. pH UP and pH DOWN chemicals are used to adjust pH levels in your nutrient solution

The most essential of all nutrients for leaf and stem development. Nitrogen consumption depends on a plants growth cycle and in a vegetative growth phase of plant nitrogen consumption is greatest. Hydroponic nutrient solutions labeled as “grow” or “flower” contains more concentrations of nitrogen. Nitrogen deficiency is the leading cause of plant growth in indoor hydroponic garden systems. Yellowish, soft and weak plants and leaves are tell-tale signs of nitrogen deficiency.

Half-strength nitrogen solutions are ideal for plants between growing phases. This will prevent plant stretch while it’s switching its energy over to flower development. Normal feeding is resumed once the plant reaches the flowering stage.

Phosphorous plays a major part in root and flower development. Phosphorous deficiency signs are slow and stunted plant growth. Phosphorous is crucial to a plants flowering stage. “Bloom” type formulas contain a 0-50-30 concentration, containing no nitrogen and high levels of phosphorous and potassium.

Potassium (K)

Different in action from the previous two nutrients, it doesn’t feed the plant directly in any specific stage of growth. It merely facilitates plant intake of other primary and secondary nutrients. Potassium deficiency cause irregular plant growth and susceptibility to pests and disease. Potassium inhibits fruit production and should be lessened during this stage.

Calcium (Ca)

Facilitating and filtering the absorption of other nutrients Calcium is one essential nutrient. It is also a natural base that increases the pH level is needed. Commonly used in the vegetative phase of plant growth, calcium consumption is decreased during the flowering stage.

Mainly for chlorophyll production in photosynthesis, deficiency causes yellow leaves.

Yellow leaves are a sign of sulfur deficiency and are only used in small amounts.

Used in small amounts, iron deficiency is similar to sulfur deficiency. Yellow leaves are the general signs of deficiency. High pH causes iron absorption problems so constant monitoring is advised.

Mainly for nitrogen absorption and converts nitrates to ammonium

Boron (B)

Facilitates carbohydrate transport in the phloem, it is not essential and maybe disregarded. Boron overdose causes plant kill, it is not found in regular soils and only supplemented.

Nutrient solution is made of water with dissolved fertilizer. It is preferable to have good quality water to be mixed with the fertilizer, the amount of which is always indicated by the manufacturer. It is very important to check and adjust if necessary pH level of nutrient solution with liquid pH adjusters. Usually, pH level of the nutrient solution depends on the plant; however, most often it is between 6.0 and 6.5 for the majority of the starter cubes, with the exception being Rockwool, which needs pH level of 5.5 to 5.8. Fertilizing young plants, a gardener should use a nutrient solution as weak as ¼ to ½ of the full strength suggested by the manufacturer. Only plants older than two weeks can be fertilized by the full strength nutrient solutions. It is recommended to keep the growing medium moist, but not too wet or soaked with the hydroponics nutrient solution.      

How to Transplant Seedlings

The seedlings should be transplanted when the roots have grown out of the starter cubes. It is just necessary to place the seedling along with the starter cube on top or into the permanent growing medium, which can be any hydroponic growing medium or just soil. 

Notes in taking cutting for clones

Cutting, as a method of plants propagation, works well only if every step of the procedure is done correctly. Otherwise, experiments may result in devastating consequences. Though, when done properly, up to 95-100% of all cuttings grow successfully, it is still may be a good idea to take twice as many cuttings as needed, if you are making first steps in growing cuttings. 

One of the hints to increase chances in successful outcome is to use distilled water, while growing cuttings. Generally speaking, this is one of the most reliable and proven methods of plants propagation, suitable for most of the plants. Other examples of propagation techniques are dividing, air layering, and tissue culture. It is even possible to root cuttings without the use of any growing media in specific hydroponic systems. After forming the first roots, such cuttings are usually transplanted into any type of preferred growing media.

Expenses made at the start of the project can be offset by the advantages in the long run. Fertilizers with their ever rocketing cost are major source of expenses in plant cultivation. Plants only take the nutrients they can absorb so maximum nutrient absorption without the risk of putting too much fertilizers is eliminated. But the risk of putting too much nutrients which leads to root damage remains, so proper nutrient feeding is advised.

All in all, the hydroponic system of growing plants increases plant production and quality of the crops. Nutrients essential for plant growth are readily available, proper ratio and distribution is assured resulting to better efficiency. Pesticides and plant diseases can be avoided as no soil is needed. Soil is an ideal medium for infection and disease, so harm to both plant and the individuals are reduced. Expenses are also reduced as pesticides are eliminated so overall; cost effectiveness is enhanced and make hydroponics a more economical way of growing plants.

For the environmentalist, the hydroponic system of growing plants also presents a more desirable and alternative way of plant production. The effects of growing plants through this new system has proven to be less polluting as it totally removes the need for pesticides and leaves the soil free from contaminants. Scientifically tests also show that plants grown through the hydroponic system contain more vitamins and minerals compared to those grown through fields.

Productivity is also increased with the use of Indoor hydroponic systems. Limited spaces for plant cultivation are maximized because smaller pots are used. Indoor hydroponic systems utilize different types of automated watering systems like drip, pumps and other means, allowing for a low maintenance operation. Spaces not available for plant growing can be utilized and together with regular soil gardens or fields, maximize each growing season.

Types of Indoor Hydroponic Systems

Wick or NFT

The system most often used, operated and maintained with the outmost ease. It requires very little setup and maintenance. This is done by simply cutting a hole in the bottom of the pot and a wick is inserted. The wick’s other end connects to the water reservoir below the pot.

Reservoir or Ebb and Flow System

A growing medium is directly placed into a pan filled with water and nutrients. It is easy to maintain, the pans contents needs only to be replaced every few days in order to maintain an effective system. Root adsorption is maximized with root surface in contact with the water, oxygen and nutrients are readily absorbed.

Drip Systems

The most common of all systems, drip systems are the most likely choice of hobbyists and professionals alike. The nutrient solution is kept in a container below the plants and is distributed by a pump to each plant thru a drip irrigation system. One type would be the Recovery type system; excess nutrients are recycled and channeled back into the reservoir. Another would be the Non-recovery type where excess system is not funneled back into the system, one advantage of this is that is a low maintenance system. Ph and nutrient concentration remains stable but is not as economical as the recovery type system.

Aeroponic System

Technically, the aeroponic system is the most advance of the three. Plants are suspended either without a growth rock or growing mediums. This permits the plant to breathe more air through the roots. Nutrients and water are introduced by timed misting. Root health is maintained by a timer and is set at intervals of a few minutes.

Hydroponic nutrient solutions are normally sold in concentrated forms. They are then added to the water supply with a specific ratio. Ideally, 150-600 parts per million consists a normal concentration of hydroponic solution. Normally sold in two or three parts because direct combination is not possible. Remember to mix nutrients into water first before combining, never combine two nutrients together.

 How Much Hydroponic Nutrient Solution?

 There are specific proportions for each plant type and phase of its growth. Advances in nutrient solutions have greatly improved the precision of concentration based on a plants growth stage. Hydroponic nutrient solutions are usually sold in “grow” or “growth” formulas for the vegetative phases and “bloom” or “flower” for the flowering phase of the growth cycle. Remember to switch to the bloom formula during the bloom stager to increase yields exponentially and max out your plants capacity.

In poor growing conditions weak nutrients are recommended. Low lighting, overheated gardens, crowding and root bound plants. Weak nutrients are also ideal for newly rooted cuttings and for transporting plants or when they are in the transition of growth cycles.

Normal, healthy plants can be used with regular strength solutions in ideal growing conditions. Increasing nutrient solutions could be utilized to enhance efficiency of your gardens. An ideal system such as high quality lights, proper aeration and ventilation when present is the only instance wherein you could increase the level of nutrient solutions to improve plant growth. Gradually increasing the nutrient solution is advised as not to burn the plant roots.

Various additives are also available for optimum plant growth. Maintain good grow logs or records of types of additives used, when applied and results. This enables you to measure its effectiveness in the future. If there are any negative effects with experimentation, flush or rinse your hydroponic system immediately.

 How to measure Hydroponic Nutrient Solutions

 Electronic conductivity of dissolved minerals in the water is the usual basis for determining nutrient solution. Parts per million (ppm) is the unit of measure. But this is just a general way of measuring conductivity in the solution and not the actual strength of individual minerals. This is the main reason why hydroponic nutrient solutions are sold as a mix of 3 parts. Once the desired mix is achieved it is very convenient to change the concentration to achieve proper conductivity.

Overuse of Hydroponic Fertilizers

 Flushing out your growing medium is the first intervention once any signs of over fertilization are observed this is to prevent further damage to the plant. Clean water is used for flushing until signs of nutrient deficiency are observed in the plant. Normal feeding and schedule is then resumed. Some hydroponic systems require a top down flushing to completely clean out the plant.

2 weeks before your expected date of harvest, flushing is recommended for the plant. It is done to leave your harvest free from the hydroponic solutions taste. 

Preparing hydroponics starter cubes for the use depends on the type of the cube you have. For example, Organo-Cubes are ready for use, while Oasis cubes and Peat pots should be soaked in water (with pH adjusted to 6 – 6.5) before use. As soon as the cubes are saturated with water, they should be left to drain a bit, and then they are ready to be used. Rockwool is different, since it has high pH. Therefore, it should be soaked in water with pH adjusted to 5.0 in order for this acid solution to be balanced to the pH level required for the plants normal growing. These cubes should be soaked in water approximately for 24 hours, followed by the drainage prior to the use. 

Having done these easy manipulations, the seeds can now be planted. Small holes about ¼ to ½ inch deep should be made in the cube with a tip of a pencil or a pen. Then seeds may be put into the holes and covered with some cube material from around those small openings.

It is best to keep the seed cubes moist, but not wet, always preventing them from staying in the water. The cubes do not need light until the seeds germinate. Similarly, no nutrients are necessary for the plants until they have their first true leaves developed. In this case a diluted nutrient solution

Light is essential for health of your indoor plants, but choosing a proper grow light may be challenging and always requires thorough considerations. Grow light fluorescent offers the benefits of high effectiveness, no heat generation and full spectrum of light. For comparison, incandescent bulbs also produce a lot of light, but at the same time they generate a lot of heat, which is not always beneficial for indoor plants.

Each stage of plant development requires a particular light. When the plant is in its growing stage during which stem, branches and leaves develop, it is the best timing to use metal halide lamps for they produce blue spectrum light. However, when plant forms flowers and fruits, it is better to use high-pressure sodium or HPS lamps, which provide red light spectrum. 

The only downside of MH and LPS lights is the heat generated by them. Heat is not good for plants and soil. To prevent overheating, special cooling fans may be required.

 diodes or LEDs, introduced in early 1920s, have debuted in hydroponic gardening as grow lights only recently. In comparison to metal vapor lights, LED lights offer a lot of benefits with the initial cost being their only disadvantage. However, these grow lights are more cost-effective in the long run, having the average life time of about 100 000 hours vs. 15 000 hours of other lights. Besides, LED lights consume less energy, providing energy saving up to 80% in comparison to fluorescents and metal vapor lamps. Furthermore, LED lights do not generate heat, and, therefore, they need no additional cooling and ventilation.

 In order to increase plant growth and productivity it may be necessary to use certain additional accessories, such as reflectors, which help to increase light intensity and make it more balanced, eliminating any “hot spots”.

 Another key component of the grow light system is ballast, which provides energy. While fluorescent light fixtures have built-in ballasts, the other types of grow lights, namely metal vapor and LED lights require remote or external ballasts. Digital ballasts are important components, so it’s better not to save money on them. It is recommended to choose domestically produced digital ballasts instead of old magnetic coil types or those imported from China. In addition to being more reliable, expensive digital ballasts are equipped with additional features, such as short circuit or defective bulb detection.

 Hydroponic gardening belongs to the most common techniques to grow plants and flowers with no land required. While building hydroponic system, sooner or later one faces the necessity to invest in high quality grow lights. A lot of people give their preferences to HID (high intensity discharge) lights equipped with digital ballast. These types of lamps provide the most natural light similar to sunlight, which is especially important for successful indoor plants growing. However, there are certain differences between HID lamps worthy to know.

 In general, five types of HID lights exist. They are mercury vapor, xenon short-arc lamps, metal halide, low-pressure sodium and high-pressure sodium lights. Among these metal halide and high-pressure sodium lights are the most preferred types.

Nutrient adsorption by soil based plants is done through adsorption of nutrients from decomposed organic materials. Here is a simple description of how these nutrients are formed: organic matter is digested by fungi or eaten by insects and is turned as waste material in the form of compost. This waste material is then digested by microbes which breaks it down to nutrients. The action of water forces this down the ground where they remain until absorbed by plants.

Nitrogen (N), Phosphorus (P) and Potassium (K) are the three hydroponic nutrients essential for optimal plant growth.  Concentration of each nutrient is found on the solutions labels. 20-20-20 on the labels means the solution contains 20% N, 20% P and 20% K concentration.

Several secondary hydroponic are essential as the plant grows through its different growth phases. Primary hydroponic nutrients combined with this secondary nutrients work to provide optimum plant growth. Examples of these secondary nutrients are Magnesium, Calcium, Iron, Sulfur, Molybdenum and Boron.

 Hydrogen Peroxide (H2O2)

 Hydrogen Peroxide is mainly used as a supplement for increasing Oxygen levels in the hydroponic nutrient solution. It also serves to stimulate plant growth and protects the plant against plant pests such as Pythium, Rhizoctonia and Phytophthora organisms. Hydrogen peroxide is also produced by the human body as a antibody to fight against viruses and bacteria in the body.

Hydrogen Peroxide occurs naturally in nature, when water in the atmosphere is exposed to the ozone (O3) it becomes H2O2. It is present in the rain and snow. It is used in indoor hydroponic systems because it oxidizes organic impurities upon contact. Hydrogen peroxide releases one of its oxygen atoms into the nutrient solution leaving water (H2O) as a by product.

 Benefits of Hydrogen Peroxide (H2O2)

 Oxygen content is increased in the nutrient solution

Protects and sterilizes growing mediums against harmful bacteria

Kills pythium and other harmful garden organisms

Increases protein development, improves metabolism and increases overall growth and health

Encourages root development in cloned plants and germination of seeds, enabling propagation of difficult plant species

Hydroponics in the Present

Thanks to many technological achievements and innovations, hydroponic growing has already become much more effective, convenient and affordable. Plastic, used for manufacturing of hydroponic equipment, such as plumbing products, fittings, growing pots and containers, etc., made it possible to lower the cost of hydroponic systems significantly.

Multiple electronic devices, such as pumps, timers and monitors, have made hydroponic growing a fully automated process. Furthermore, the hydroponic plants themselves have evolved significantly, ensuring high yield results even if used under the most extreme environmental conditions, for example, at the submarines.

Hydroponics in the Future

The next goal of hydroponics developers is to make indoor gardening eco-friendly and more energy-saving. In this regard, current achievements in the development of solar heating systems look very promising. On the other hand, current innovations open new opportunities for designing new growing light systems with higher lumen output, better spectrum profile and lower electricity consumption. In the long run, hydroponic systems may allow increasing the amount of grown plants to completely satisfy the needs of people in food products, without using additional natural resources and soil.

Furthermore, maybe in the nearest future hydroponic systems, which have already been tested in space on the space stations, will even become another valuable step in the space exploration by the humans.