Hydroponics free gardeners from the hassles of weeds, pests, and early frost, but they are not completely maintenance-free. Sprayers can get clogged with mineral salts from the nutrient solution, tubing can become grimy and algae and fungus can grow in the nutrient reservoir. Cleaning debris and residue from the system does not have to be a complicated task. In fact, the same system that provides nutrients to your plants can take care of the cleaning as well.
Clean Your Hydroponic Equipment
If you have an active hydroponic system, stop the pump. Drain the nutrient reservoir into the bucket and discard the used nutrient solution. You can also recycle this solution by using it to water your soil garden or your lawn.
Use a clean rag or paper towels to wipe down the grow tray, nutrient reservoir, sprayers (if you use them) and drain fittings. Clean off as much excess residue as you can.
Refill the nutrient reservoir with clean water. Allow this to sit uncovered for at least an hour to allow any chlorine present in the water to dissipate.
Add to the nutrient reservoir 3ml of 35 percent H2o2 (hydrogen peroxide) per gallon of water. Mix well.
Turn on the pump (if you use one) and let it run continuously for 24 hours. This will thoroughly clean out the tubing, sprayers, drain fittings and every other part of the system that comes in contact with the water.
After 24 hours, turn off the pump and drain the H2o2 solution from the system. Discard this solution.
Refill the nutrient reservoir with plain water and allow this to sit uncovered for an hour. Add concentrated nutrient solution, following the manufacturer's instructions, and re-start the pump.