Thanks everyone.
I've come up with a slightly better solution then the rubbermaid tub.
I've "torn down" the 20 gal and everything but the two filters and the gravel has been transfered to the 56
goldfish tank. The Cory's are happy (I think I can only find 2 of them now) and the WCMM look confused but seem content. I moved Red, his plants, and his
driftwood to the 20 gal, it's a tight fit but hopefully now I can drain and empty his tank and repair it between now and the move. Tearing down the 20 was something that I was sort of planning anyway with the move so this just moved the time table up a bit.
Just draining everything now.
P.S. Red's
canister filter and box filter were moved onto the 56 in the mean time.