Originally posted by lopeyc
if i was to keep my 250w 10,000K MH pendant but get a bigger tank (currently at 36), what would the max dimensions to have effective lighting for anemones, polyps, mushrooms and other "easy" corals?
Hard to say. You shouldn't really get too long of a tank with just 1 bulb, or else the ends may not get all that much light. Also, it will depend on how far away the anemone is from the bulb, and how deep it is. mushrooms would do all right under moderate-low lighting.