Just watch your ammonia levels.
They will eat algae, change to frogs or
toads and hop on out of there.
There is one species that won't - bullfrogs.
They will winter over and change next spring.
Do you remember who was romancing around your pond? What they looked like and
sounded like?

If too many come back next year, you can scoop out the eggs and transfer to a
natural pond.
For the sake of amphibians you'd be doing them a favor.
Those that hang around your garden are great pest eating machines.


kathy :-)
algae primer
http://hometown.aol.com/ka30p/myhomepage/garden.html