..big picture..
It is good to hear your fish have not been affected by such varying water change temps..
First, a rainstorm will most likely never replace 25% of a lake, probably not even 2%.. Second a 10 degree change in water temps is a big difference. I learned here, and reading that I should not chance it... Overcautious? maybe..Originally posted by OrionGirl
So, about 10-18 degrees different from the tank water. I do changes of about 20-25% weekly. Never had a problem with it.
Do you think fish get sick/stressed everytime there's a rain storm?
It is good to hear your fish have not been affected by such varying water change temps..

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