Am planning on purchasing a 120 for my two red snooks, was wondering if two canister filters, say 300 GPH would be sufficient with the heads in the corners to keep the water moving. In adittion to the two snooks there would also be a pleco that is about 10in. I figure that there would be plenty of room for all of them once the snooks are full grown with room for the pleco to grow as well. Any advice on setup or any constructive criticism is welcome. Thanks alot all