Well for goldfish emergency rehousing I always like new trashcans or rubbermaid storage containers. There always 30 gallons minimum and under 20 bucks. I'm not sure how long the fish is your looking to rehouse. Or if shallow is OK for your fish a kiddie pool? Maybe some loose lumber and some 10ML clear greenhouse plastic? Or pondliner? Maybe you have a friend who can put him in their tank for a couple weeks? Best of luck,
Glenn
