JodiMartin2003
Aquarium Advice Regular
- Joined
- Mar 24, 2006
- Messages
- 93
Well, in order for me to do a proper water change, IE 50% I have to turn off my heater and have never had any ill effects. My fish have always survived, bettas included. As long as the water you are putting in the tank is the same temp as the water you take out, there shouldnt be a problem, your heater shouldnt be off long enough to make that big of a difference.