i would suggest using a rubbermaid storage tote. the kind you find at walmart-very inexpensive. and plug in a bulkhead with ball valve as orionn said. that is the cheapest way i can think of. less than 50 bucks.

of course you could ask your lfs to order you one of those plastic containers with it already put together, but that would run you 75-150 bucks.

here is a link to what i am talking about, cheap container:

http://www.usplastic.com/catalog/pro...uct%5Fid=19548

or ready made:

http://www.tank-depot.com/productdet...rt=A-SP0026-RT

~alex