Sprinkling Rockwool Inside an Indoor Grow Box.

To water or to not water that’s the question. Every indoor grow box owner has asked themselves if they’re under watering or over watering their rockwool cubes. Many novice indoor grow box growers believe adding more water to their plants inside their hydroponic systems can help them grow bigger and better. This notion can’t be farther from the reality as overwatering has killed many a newcomer indoor garden. This article explores the proper watering methodology for rockwool in an indoor grow box.

Rockwool is made of molten rock spun into fibers like cotton candy. It has an excellent substrate for plant roots since it holds at least 18% air all the time and offers the plant root zone with plenty of oxygen. However, it also possesses a top water holding capacity (WHC) and is definitely an inert medium meaning there are no biological properties therefore it is recyclable. Rockwool is sterile so you may be certain that you will be starting fresh when you germinate your seeds. Seed borne disease like dampening off are nonexistent in rockwool due to the sterility of the medium. All the last listed benefits enable rockwool to consistently typically the most popular hydroponic growing medium in indoor grow boxes.

As a broad rule for watering rockwool: less is more. Determining just how much water depends upon many factors such as for instance plant height and lifecycle stage, light cycle, humidity and the kind of hydroponic technique employed in grow boxes. Gardening Reviews The four most popular of grow box hydroponic techniques are Ebb and Flow, Drip/Top Feed, Deep Water Culture, and Aeroponics. Rockwool can be used in all systems and it’s most reliable in a combination of technique system. Hydroponic superponics systems that employ the fusion of hydroponic technologies offer probably the most complete solution for growing plants effectively with rockwool. Combining top feed drip with deep water culture enables an indoor grow box owner the ability to automate watering from germination to harvest by timing effective watering cycles down seriously to the minute.

The question then arises: how often do I water my rockwool in my own combined deep water culture/ top feed drip system? It’s always best to start your watering cycle whenever your lights first come on in your indoor grow box. The final watering should occur three hours before the lights go off. Only water when the lights are on, the plants do not have to be watered during their dark or resting phase. So to keep the cubes moist whenever your plants are below 3 inches you water once for 15 minutes every 2-3 days, making sure that the rockwool cube feels about “half-way” dry. When your plants are in 6 inches, water 1-2x a day. When your plants are in 9 inches increase watering to 3x a day and when the plants are 12 inches and larger you want to water 15 minute 3-4x a day. Even although plants roots will undoubtedly be embedded in the deep water culture it’s advantageous to still utilize your rockwool cubes for water delivery.

Here are some other tips to boost success when watering your rockwool in an indoor grow box. Use plastic covers over your rockwool cubes to prevent algae formation. Algae at the the top of rockwool cube can lead to stem rot. If you would like more active plants water less as overwatering will inhibit root production. Always soak or “condition” your raw rockwool cubes in plain water with pH of 5.5 for at least 1 hour to eliminate excess salts and material from the cubes. Conditioning the rockwool is an essential first step and will greatly boost your propagation efforts. The pH of one’s nutrient solution being absorbed by the rockwool should be between 5.5 and 6.0. Stay away from drastic changes in the plant’s environment such as for instance a huge pH fluctuation or adding a lot of nutrient solution. Rockwool drains well, but make sure the rockwool isn’t sitting in standing water as this will impact the rockwool’s ability to make a solid root mass. Finally don’t allow rockwool cubes go bone dry, keep rockwool moist and in consistent temperature, humidity and light intensity and rockwool will reward you with the very best tasting end product you’ve ever had.

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