I saw this PondMaster P-4000 canister filter rated at 2000 gallons per hour + has a 40 watt built in UV sterilizer. Can it be used on an aquariums or is it strictly for pond use only? It's $599.00 at Petsmart.com but I saw it somewhere else for $435.00. The other site said it's rated at 4000 gph.
http://www.petsmart.com/product/ind...w=filters&parentPage=search&keepsr=1#prodTab1
http://www.petsmart.com/product/ind...w=filters&parentPage=search&keepsr=1#prodTab1