Ok I just put 2 20lb bags of arago live in my seahorse aquarium. Is there actually any benefit from this stuff? I mean I know most of it is under water but that dont mean much is what I am guessing. I got the stuff cause My wife and I like the colors of the sand. That and it was cheaper than buying true live sand =]. it does say over 20 million bacteria but how do they know that? it did seem like it was loaded with copepods as I have not seen as many copepods in my tank as I did a couple hours after putting this sand in.