Join Date: Jan 2002
Location: Vinson Massif, Antarctica
Hehe, a turtle, if anything, will create more scum. They are incredibly messy, and can be destructive if you have aquatic plants like lilys and will likely eat any fish or frogs in the pond, but not any sort of scum.
If the water quality is poor enough for scum to form, frogs likely wouldn't survive very well. They have very porous skin, and will absorb any bacteria or chemicals that can build up in a contained water system like ammonia and nitrates. If it was a good enough spot, its pretty common for frogs to find it on their own anyway, especially if it stays full all year round and makes a good breeding pool. Tadpoles eat algae and decaying plant matter, adult frogs generally eat insects - so no scum solution there anyway.
I've never kept ducks, but I've seen the mess they can create - I can't imagine they would help the problem either, though, stirring the water up some on a regular basis might help.
Trying to track down the source of the scum is probably the only real option, which can be pretty frustrating in an outdoor, hard to control environment. Is something like waste from other animals leeching into it? It is so hard to guess.
She sits in her corner, singing herself to sleep.
Wrapped in all of the promises, that no one seems to keep.