lito
Guest
Hi just finished my canopy 4 fans on top and 2 on each side blowing out and 2 small ones blowing inside from the back. Canopy is 12 inch tall - 10 inches above water. Have 4 x 65 pc and current temp 79 - 80 F . Although have set my heater to 78 and at times it'll light up. before the canopy, where my lights where in a fixture right on top of the tank temp is exactly the same. Questions is if I install 2 - 175 watt metal halide would temp change? With 4 x 65 watt pc it didn't changed. I am kinda skeptical in buying MH and turn around and have to ditch them. Thanks for your advice. By the way tank is 150 gallon with 29 gallon sump.