[AMCDude]

I don't know what Caswell suggests, but I use a plastic storage container, the kind that is used for storing wrapping paper. It's about 36" long, works fine. You might have to swirl the liquid for complete coverage, but it can be done. You could use some vinyl gutter, with end pieces glued on, if you need something longer. Take a walk thru some discount stores, you'll be suprised w/ what you can get, cheap.