I have 250 Coral Life MH fixture on my 65 gallon tank right now, and I noticed yesterday that the center plastic plastic strip in the middle of the aquarium gets really hot when the MH bulb is on. I run it for 6 hours per day and I really don't want to go any less than that. I'm worried about it doing damage to the center plastic piece. Anyone else out there have a similar problem? The fixture is three inches off the top and probably 3.5 to 4 inches from the center plastic piece. Any help would be much appreciated.