We all know bettas need heaters not just to heat the water but to keep the temperature stable.
But in the summer months, tanks can get pretty hot. I've been doing bulk research on the very common bacterial infections that get about in summer, causing mass cases of fin rot, ulcerated skin, popeye, cloudy eye, septicemia, lots of nasties.
Temperature spikes are apparently a common trigger for these bacteria to invade fish that might be a bit systemically compromised for whatever reason (ammonia/nitrite exposure from infrequently cleaned/improperly cycled/protein polluted tanks seems the most common co-problem, from all I've read, and parasites are a close second).
I've seen a lot of suggestions for methods of keeping tanks from getting too hot. Fans, mostly. I'm wondering if anyone's used these to good effect?
Not an issue for me right now, being that it's freezing here right now. But we can get up to 120F in summer, on some days. Poor fish. Last summer I kept the house fan on the tanks and closed all the blinds, next summer I'm thinking I'll get an aircon unit and move them all into the living room for those few weeks where the heat gets stupidly high unless there's an affordable alternative that works..