I have purchased a 100w metal halide grow lite by Sunlight Supply (see picture) for my 30 gallon hex aquarium. I am baffled as to the best best way to hang/mount this light. What are your recommendations. I have read of someone just resting it over the glass on the aquarium - is this hard on the light, will heat be a problem or not since the lamp is enclosed in a metal casing?
Should the light be suspended? Build into a hood?
I know nothing about these lights and want to what's right. I am open to all recommendations that don't cost a small fortune!