k well i got a 45 gal tank under my 150 and put 30 lbs of the best live rock i could get down there. I really want to know what the best substrate is for growing macro algae. Also what inverts and such should go down there, how many snails, hermits, any kind of fish good to have down there. also what are your feelings on macro algae, what is the best ones and what else should i grow down there. Just looking to be pointed in the right direction.