I recommend the rubbermaid "brutus" trash can. You can get it in 30 and 44 gallon sizes. Its not that other rubbermaids won't work fine, they are all made from a single piece of material so they have no seams to leak, however I am usually more comfortable with the Heavy Duty Brutas because if something goes wrong with the heater you have thicker material and less chance of melting a thinner plastic.
Here's to swimmin with bowlegged women.
Reef with 30G Sump/Fuge Combo
-30G LTAnemonarium with mated porcelain crabs, 10 sexy shrimp, and 2 pink skunks all tied into the other 135G in my system.