let's not forget retained heat! Especially if you're using MH bulbs. Also, if you're resting the lights on the glass, you risk overheating, wrecking either your lighting unit or the glass!
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75 gallon with 20 gallon sump in the works.
R. Bacchiega. Tattooer
I didn't smack you, I simply High Fived your face.
I've got so much glue on my pants it looks like a Friday night gone horribly wrong.
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