Hay anyone around this area have a sea hare he can use for a week or two. lights out with sea hare would be the best way, I did this only because of a faulty power timer that was wired backward on the inside so on was off and off was on. They just put the wire on the wrong output connection a bit of solder and it was fixed. Thats me two cents and a plea for help with your problem. A sea hare get right down to the root of the problem. Put rock in the tank you have cycling and just leave the light off. ambient light is ok just not direct light.

Bill