You can under water but not in hydro if your roots are in the water.

There is no such thing as overwatering. It's drowning. How do we explane hydro ? It is the duration of the saturation of the rootball. It rains for days outside.

If you are going to run co2 you don't need out side air.

Be carefull. No co2 in a living area. It can flood a house and kill everyone.
Been there, almost tragic.

Two 1000's. I would just keep adding waterfarms or 5 gallon buckets maybe cheaper.
LOC NAR on probation Reviewed by LOC NAR on probation on . Waterfarm 8 Hi..., and thanks in advance for your help. I have read a lot on these forums and now have questions of my own ;-) ... I have an indoor growing room with a waterfarm 8 using hydroton and GH nutes. I am on my first crop which was started from plants that were almost 2months old as a friend was growing them for me as I put my room together. I lost a couple during the transition do to the roots not catching in the hydroton (the rockwool the plants came in too big..., learning lesson ;-) I Rating: 5