Thanks for the compliments. My light about 5 inchs from the water although I could rest it right above the eurobracing if I wanted to. The tank is 4' x 3' x 2' and if I have the fixture to close to the water the spread isnt as good and its a pain to get my arm in there to work with out moving the fixture up, which is heavy. SO I have been leaving it 4 or 5 inchs above the eurobracing.