the catfish and my silver arowana thats all...i'll have a pondfilter from a pond store in shipment anyways...that pond filter is rated for a 4,000 gallon pond...and ill have to just keep the 2 bucket filters on the bottom sides of the pond.And this pondfilter thing that im getting will be from ryt in the top middle of the pond just lie those hang-on ones...but this one looks like a Canister....and its only for $89.98