Originally Posted by ztigris
Scotty, on that small of a tank it wouldn't be to much of a change and shock the fish?
Not as long as temp is right usually. (obvious exceptions to this rule discus, possibly new/young neons etc.) i change my bettas 2.5 gallon water with 4 or 5 80% wc
in a row because of the tannins leeching from my driftwood . Never had a problem. Just IME though.