The acrylic piece is part of the hood, under the light, not on top. It will be between the light and water to be more specific. And good point about the acrylic tanks, lucky mine's glass
. But I'll definately ask if it's heat resistance just in case.
But if anyone could tell me or direct me to any place where I would know how much clearance I need between the water and MH, that would be great. I don't want to rest it on the tank's edges and find out I'm cooking everything inside. Also, need to plan the budget, cuz a rack or frame around the tank to place the MH will surely spike up my cost. Otherwise, it's the 4x55w PC.