well let's see, you do or don't have an exhaust fan that works? how do you get consistant fresh air?

by planting cubes do you mean rockwool? did you pre-soak the hydroton and rockwool?

you say you don't know the pH and you can't check it, but you know it's a stable 6.5? which is it?

by the way, you want your pH for hydro to be between 5.3-5.8.

how many bubls do you have? that's a big space for fluros.


-shake