Fish Junction,
I too work with comercial holding systems and have used hyposalinty numerous times in those systems. So far with a specific gravity of 1.009-1.010 at 78F I have a 100% sucess rate with crypt. I do have two holding systems and there for can isolate new arrivals and healthy fish from the ones under treatment. Also I find it best to treat without the use of copper along with hyposalinity unless rigorous attention is paid to the pH and alkalinity as this drastically affects the toxicity of copper.
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Bill
If damsels grew as big as sharks, the sharks would run in fear!
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ICQ 56222784