Quote:
Originally Posted by shanks
It does not have a sump but rather a canister. Do I need a sump for a reef. From what I have read the coral and rock and inhabitants do most of the filtration. Agreed on the rest of the list
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For a 125g, canister will not work (other than possibly running some carbons and stuffs) and will need very strict maintenance schedule. Sump is always the way to go for bigger tank. Its not only for rocks but also to keep skimmers and add some extra volume of water.