Man is the water warm/hot, my hot water heater hasn't had to turn on much, unlike my AC. But, when it's this warm it sure speeds up the fishy's metabolism. In the morning the waters warm, but after lunch when it starts feeling like bathwater I'm done. Something interesting about it though, they try hard to feed daily cause it digests so fast and makes them hungry. Something else I've noticed through the years, it seems like 8am and after they get going GOOD til after noon, even 3pm. they're HUNGRY!!Thumbs Up