Originally Posted By: Bill Cody
Small fish especially fry are more sensitive than the adults. Another factor to take into consideration is the alkalinity. The lower the alkalinity the more toxic the copper becomes, even buffered copper, to those exposed. There are several variables that are involved in the degree of toxicity.


Thanks for the input Bill! Supports my new scenario. No dead little guys and my alkalinity is 300+.

Snrub,

Never thought you didn't research it man. It's the spot treatment that seems to be the hardest for me. If it's dead calm, maybe stand a decent chance of getting it right but, if the wind is blowing some it is real tough for me to figure out how to keep the concentration of Cutrine right for the required 3 hours.

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