I have a 24 site ebb and gro system I just set up. I have done ebb and flow tables many times before with great success. The problem I am having is that i vegged in 3" rockwool blocks and the controller only has 15 minute intervals so, I seem to be overwatering the rockwool and no new root growth is really evident. I thought of raising all the buckets slightly above the level of the controller so they would not flood as high. Anyone have experience with this or thoughts?