[bkelly]

thanks , i got 2 reeflows, one return/one closed loop, ill check my heaters i have a UV if that adds heat all reactors are spliced off the return line, i did have to add a fan to the sump since i sheeted in below the cabinet, i got a bigger fan over the tank its helped about 5.-1 degree lower, the tanks in a basement rec room / not a huge room AC is on as is the dehumidifier - that adds air temp heat. i checked the temp probe on the controller and its bang on , my lights arent even close to the tank now - prob 6 inch above, no tank cover , the dimensions are 48 by 36. thanks for the reply, ill look into what youve suggested. current temp is 82, ive set my MHs for morning running only right now.
cheers
brent