I agree with the stability and also agree 83 is not bad. What I don't understand is how a 65g tank is getting overheated by 130w pc
lights. I run 350w (2x175) of MH
for 8 hrs/day and 160w no flourescent (4x40) for 12 hrs/day and I have no problems with temp. PC
's run way cooler than MH
's. Something just doesn't seem right. Can it possibly be one of your pumps is running hot?