The Puffer Forum

Since having my SAP for about a month, she has had ich on and off. I have been treating with Anti-whitespot plus aquarium treatment. I thought whitespot is meant to be contageous, so how come none of my other fish are suffering? I've just put in a dose of treatment but on second thoughts wish I'd done a waterchange prior to that but now I'll have to leave it until the weekend to avoid overdosing them with chemicals.
All water parameters are normal - is there anything else I can do?

It is down to poor water qulity that you have the problem. Your SAP is showing the signs as they are scaleless and therefor have less protection for the parasite. Could you post your water test details and the size of the tank?

Why some get ich and others don't is generally regarded to be due to stress factors and immune systems. Stressed fish have lower immune systems, which makes them more prone to catching things.

I would highly recommend not using any chemicals at all to treat the ich. Puffers are very sensitive since they are scaleless, and ich chemical treatments tend to cause more problems/death than they fix. All you need is to increase the heat and add salt, any kind of salt, 1 Tablespoon per 5 gallons of water volume. Treat for an absolute minimum of 2 weeks. Start with a major water change to get rid of as much of the chemicals you've added already, then start the treatment. Read the sticky at the top of the hospital forum for more info on treating ich.