i had a oceanic 58(55 show tank) that i ran 2-250mh and 4-55 pc lights on... i keep everything in that tank(lps,sps,clams,softies) just in different area's.. never had a heat issue. on my 30g clam tank i had 1-250mh with 2-75vho's no heat issuw with it either..


on the 156rr i'm running 2-250 mh, 1-400 mh, and 4-54 t5's.