#sump upgrade

I inherited a 56 gallon Uniquarium tank with a built in Sump system from a good friend. dimensions: Full tank size: Sump area: 4” D 24” H 36” W Swimmable area: 10.25” D 24” H 36” W The pump sits above a sponge and some ammonia reducing media. The water then passes through a protein skimmer...