difficult to impossible to kill the cooties. they are larger and have good DNA
repair mechanisms cause they are eucaryotes. algae is not killed by regular UV
either.
If fish are healthy, if you can keep bird shit out of the pond, if you dont introduce
new fish into the pond without extensive quarantine, if the water is kept in great
shape then the few cooties around are good cause they continue to challenge the
immune system of the fish. Ingrid

"Jeff & Kathy Brown" wrote:

It's the algae but mostly the "cooties" that I want to manage. Thanks


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