sorry it is soil.There is only 2 1/2 weeks to go on them. I cut the bottom of 3 worst one and pancaked into another bucket. that should eliminate root bound. O roots looked good no rot.but there were clusters at bottom of container. I was feeding1/4 strength mg every other watering .watered 1-2 a week depending on conditions.heat is also a factor, but i now have ac.This is the first autos i have seen ,where thee root filled a 3 gallon contanier.Again ph was 6.8 it is very constistent. That is run off. Could it be a nitrogen overdose? Because of the mg?