To water or never to water that’s the question. Every indoor grow box owner has asked themselves if they’re under watering or higher watering their rockwool cubes. Many novice indoor grow box growers believe adding more water for their plants within their hydroponic systems can help them grow bigger and better. This notion can not be farther from the reality as overwatering has killed many a novice indoor garden. This short article explores the proper watering methodology for rockwool in an internal grow box.
Rockwool is manufactured out of molten rock spun into fibers like cotton candy. It provides an excellent substrate for plant roots because it holds at the very least 18% air all the time and offers the plant root zone with lots of oxygen. However, in addition, it possesses a high water holding capacity (WHC) and is definitely an inert medium meaning there are no biological properties so it is recyclable. Rockwool is sterile so you can be certain that you’re starting fresh whenever 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 the most popular hydroponic growing medium in indoor grow boxes.
As an over-all rule for watering rockwool: less is more. Determining just how much water is dependent upon many factors such as plant height and lifecycle stage, light cycle, humidity and the type of hydroponic technique employed in grow boxes. The four most widely used of grow box hydroponic techniques are Ebb and Flow, Drip/Top Feed, Deep Water Culture, and Aeroponics. Rockwool can be utilized in all systems and it’s most reliable in a variety of technique system. Hydroponic superponics systems that employ the fusion of hydroponic technologies offer the most complete solution for growing plants effectively with rockwool. Combining top feed drip with deep water culture enables an internal grow box owner the capacity to automate watering from germination to harvest by timing effective watering cycles down to the minute.
The question then arises: how often do I water my rockwool in my combined deep water culture/ top feed drip system? It’s always best to start your watering cycle as soon as your lights first think about it 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 don’t have to be watered throughout their dark or resting phase. Indoor Grow Boxes So to help keep the cubes moist as soon as your plants are below 3 inches you water once for 15 minutes every 2-3 days, ensuring that the rockwool cube feels about “half-way” dry. Whenever your plants are in 6 inches, water 1-2x a day. Whenever your plants are in 9 inches increase watering to 3x per day and when the plants are 12 inches and larger you intend to water 15 minute 3-4x a day. Even though the plants roots will soon be embedded in the deep water culture it’s beneficial to still utilize your rockwool cubes for water delivery.
Below are a few other tips to improve success when watering your rockwool in an internal grow box. Use plastic covers over your rockwool cubes to stop algae formation. Algae at the the top of rockwool cube can cause stem rot. If you prefer 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 the very least 1 hour to eliminate excess salts and material from the cubes. Conditioning the rockwool is a significant first faltering step and will greatly raise your propagation efforts. The pH of your nutrient solution being absorbed by the rockwool should really be between 5.5 and 6.0. Stay away from drastic changes in the plant’s environment such as a huge pH fluctuation or adding an excessive amount of nutrient solution. Rockwool drains well, but make sure the rockwool isn’t sitting in standing water as this can impact the rockwool’s ability to produce a solid root mass. Finally don’t let the rockwool cubes go bone dry, keep rockwool moist and in consistent temperature, humidity and light intensity and rockwool will reward you with the most effective tasting end product you’ve ever had.