Bill, I assume you are putting colored maple leaves in (ones that have lain on the ground for a while?) Are they brittle and falling in pieces or do you put the whole leaf in?

I'm considering putting a few in a tank to watch but I don't have an aquarium setup so once my water gets tannin or debris I can't easily separate the little guys out to do a water exchange.

A fish tank at the kids school has 6" goldfish in it, I'd love to bring some to school for kids to watch. But maybe goldfish would snap them up?