I am running the same ebb/flow and my 50 gallon rez is in the grow room also. Not sure what part of U.S. you are in but my grow room temp does not get too bad (75 to 78... 80 to 85 when hot outside) so rez water temp stays in 70 to 73 range and 75 when hot in the room. I have a couple of air stones so my water circulates pretty well. I use the frozen plastic liter bottle trick Tiny told me about. Like Keylime said, get a couple of air stones.

Your girls are looking good.
scottcc5s Reviewed by scottcc5s on . Quick question on Rez/Control Bucket Temps Hi all, Well the girls are doing well so far so no new photos, (but the girls say High). I been looking around and don't see this subject broached yet, so I'll broach it. I'm using the Ebb & Gro system. I have been using 2 lt bottles filled 2/3 with ice for rez cooling. Keeps the rez around 65°F that way. The problem is the the control bucket, which is closest to the plants, is a bit warmer (about 72°F). Should I be cooling the control bucket as well, or just it? Sorry if I sound a Rating: 5