I have a soil indoor set up with a 600w HPS, I use a 5 gallon bucket with about 12, 1/4 inch holes drilled in the bottom. That bucket sits in another 5 gallon bucket with out holes. The theroy was when watering if i over water the excess water would drain thru the bucket that the soil and plant is in to the second "catch" bucket. I have three ladies about 2 months into veg and the root system comes thru the first buckets holes and droops down into the catch bucket. When i water i usually go back the next day and dump off any excess water that passed thru the soil. some questions i do have is: Is it harmful to have the roots sit in stagnent water? Is it harmful to have the roots sit in a dry bucket when i do dump the water? The one i overwatered a bit and forgot to dump so some algee built up in bucket and the roots on the plant is a bit greenish like the algee is on the plant. will that harm the plant? Let me know if pics or any extra info is needed and ill post. Thanks for the help guys!