Hey guys so I had this discussion with a guy today who has a salt water tank. He has a 45 gallon cube. He claims that he has taken his canister filter and removed all the filters out of it and filled with bio balls . So what do all you fine people think of this. Would this act as kind of a sump.... I'm certainly not experienced enough to know what to think about this..... he says it works great but I've got my doubts