Don't Temps in Bella Union get upwards to 100 degrees though? Maybe I'll just completely shut off my heater all together. I like to have some heat though with raising young fish to keep their appetites up and power feed the hell out of them.I use the same method as dogofwar. No heaters at all in Uruguayan tanks.
For those I kept in ponds in summer, I moved to a kiddy pool in an unheated basement in winter, where the temp would drop into the 50sF, and also where I'd overwinter koi and water lilies. In the coldest months(Jan and Feb), no feeding at all until the spring warmup.
