by Jorge Cervantes
Draining Water
Marijuana does not like dry or soggy soil. Soil kept too wet drowns the roots, squeezing out oxygen necessary for nutrient absorption. if soil is too dry foliage does not have enough water. Either case causes slow growth and possible fungal attacks. Poor drainage is most often the cause of soggy soil. It is compounded by poor ventilation and high humidity.
You will have to drain much water out of your grow room. Water can go down a drain or be caught an d pumped or carried away. A floor drain is the easiest method but not always practical or available. Catching drain water in a reservoir requires plants to be elevated on a table. Once the drain water is directed back to the drain basin, it can be removed by hand or with a pump.
Leaching soil flushes out excess nutrient salts that build up in the soil. Flushing the bad stuff out of the soil prevents many possible problems. To leach, put a plant into a deep sink, bathtub, or over a bucket, and then water heavily with three times the volume of water as soil in the pot.