Hello I have a 125gallon salt water tank and we have had a canister filter on it. We are wanting to change it to a sump we have a 55 gal tank for it with a custom built stand. As of now it’s just the tank with nothing in it. We are wanting to get our return pump/ protein skimmer before we set it up, just so we can make sure everything fits and what not. What are your recommendations for a skimmer/ return pump for those sizes?