stinky algae?

Hello. I have a smallish pond, about 500 gallons. I don't mind a
little string algae or if the water is green, but this year it's got
this kind of a mat of bubbly, stinky, green stuff floating on the
top. Is this algae? Half of the top is covered by water hyacinths
and the other half by this stinky stuff. I have no filter, 3 little $.
12 feeder goldfish, snails and tadpoles, and I did clean debris out in
the spring, although I'm sure there's more by now. The few treatments
I've seen say they're not suitable for invertabrates and I don't want
to kill the little creatures in there. Besides being stinky and ugly
it's also choking out my 1 lily and water hawthorne which used to do
so good. If I just scoop it out until the hyacinths spread a little
more will they eventually overtake it nutrients-wise?

Thanks for advice,
Lydia

all you need is one of those cheap air pumps from Kmart, with two
outlets, two air stones. Ingrid

On Sun, 08 Jul 2007 21:35:53 -0700, Lydia
wrote:

Hello. I have a smallish pond, about 500 gallons. I don't mind a
little string algae or if the water is green, but this year it's got
this kind of a mat of bubbly, stinky, green stuff floating on the
top. Is this algae? Half of the top is covered by water hyacinths
and the other half by this stinky stuff. I have no filter, 3 little $.
12 feeder goldfish, snails and tadpoles, and I did clean debris out in
the spring, although I'm sure there's more by now. The few treatments
I've seen say they're not suitable for invertabrates and I don't want
to kill the little creatures in there. Besides being stinky and ugly
it's also choking out my 1 lily and water hawthorne which used to do
so good. If I just scoop it out until the hyacinths spread a little
more will they eventually overtake it nutrients-wise?

Thanks for advice,
Lydia