I run a 40 gallon breeder that is divided up in three chambers I just cleared it out yesterday of about 50 pounds of Liverock as I was getting detritus buildup bad and raising my phosphates in turn algae. Left chamber is going to remain empty , the center is for my macro,frag rack and harlequin shrimp , and the right houses the return pump ,protein skimmer and starfish for my shrimp. Looking for everyone opinion on if I should keep the center bare bottom or add sand and live rock