To claify further, I am reading via the search engine on this site that people flush for anywhere from 5-7 days. So now here is my issue, it's going to be very difficult to get rid of the water if I flush in the room that the plants are being grown in so I was thinking untieing 4-5 from the PVC pipe, bring into the garage and have a huge container for water that is being pumped from the hose outside. Place plants on a bit of corregated roof on a slight incline, and drain the waste water down the driveway. Would this process work if I used about 8-9 gallons per plant maybe twice in the last week or so? Less? More?