Perlite
Perlite has been known for years as soil additive and growing medium, used to increase aeration and soil drainage. Perlite belongs to mined materials, originating from volcanic glass. This natural material breaks into multiple tiny bubbles, when heated rapidly above 1600 deg. F.
Being one of the best hydroponic growing media, perlite is usually [...]

 
In most cases, either phosphoric acid or potassium hydroxide is used to adjust pH level of the hydroponic nutrient solution. The first substance is used to lower pH level, and the latter, consequently, is used to raise it. Being relatively safe and usually sold diluted, both of these chemicals should be handled with care, [...]

Along with water, hydroponics plant nutrients, CO2 and oxygen, grow light is the key basic component, required by plants to live. Providing additional light is necessary for indoor gardening. Furthermore, light should resemble the sunlight as much as possible. The major concern with other types of lights is that they do not produce light in [...]

How to Use Cubes
There are many different sizes of rockwool growing media cubes. The 1×1×1.5 inches and the 2×2×1.5 inches cubes are usually not wrapped into plastic and used as seeds propagation equipment. These are the so-called “starter cubes”. Another typical size of rockwool cubes is 1.5×1.5×1.5 inches. These cubes are usually wrapped with [...]

The most widely-spread growing medium in hydroponics systems is, perhaps, rockwool. Originally used for insulation purposes and also known as mineral insulation, rockwool was first used as growing medium by Dane gardeners. Now, it is frequently used for drip-style indoor gardens around the globe.
Rockwool is produced by a process similar to making cotton [...]

The most widely-spread growing medium is, perhaps, rockwool. Originally used for insulation purposes and also known as mineral insulation, rockwool was first used as growing medium by Dane gardeners. Now, it is frequently used for drip-style indoor gardens around the globe.
Rockwool is produced by a process similar to making cotton candy: a particular mixture [...]

Generating between 65 to 115 lumens of light per each watt of consumed electricity, metal halide grow light lamps are considered to have high efficiency. MH lights produce light, which is very close to the natural sunlight with the rich blue spectrum. Due to this, MH lamps support vegetative growing in the most desired way [...]

 
Along with water, hydroponics plant nutrients, CO2 and oxygen, grow light is the key basic component, required by plants to live. Providing additional light is necessary for indoor gardening. Furthermore, light should resemble the sunlight as much as possible. The major concern with other types of lights is that they do not produce light [...]

Along with water,  hydroponics plant nutrients, Co2 and oxygen, grow light is the key basic component, required by plants to live. Providing additional light is necessary for indoor gardening. Furthermore, light should resemble the sunlight as much as possible. In order to achieve that goal several types of lights are used: incandescent, fluorescent, high intensity [...]