purple BACTERIA, not purple dye. they are a type of anaerobic
bacteria that breaks down organics and one product is H2S. Jo Ann had
a go around with that when Steve snuck some of those bacteria into a
couple of her tanks and her fish started dying. she had to bleach the
tanks to kill the bacteria. I dont know who it works with ponds.
would think drifting bacteria would bring em into any pond or tank,
but I guess not in enough numbers. Ingrid

On Sat, 12 May 2007 18:39:55 CST, ~ jan wrote:
I use to use it all the time (it isn't a purple dye, but a dry mix),