I just bought another can of black waterfall foam at Home Depot. I have bought it at pet shops and garden centers, just about anywhere you see pond stuff sold. I have seen a few online sales that might have been worth it. The best one was a 3-pack, but the cans don't have an indefinite shelf life, so if you don't have lots of projects in the works....D-007 said:Looks like the only place to get Black Waterfall Foam is online - that's a bummer because it ends up being quite expensive for just one can. :roll: