- Joined
- Mar 20, 2011
- Messages
- 7,257
- Reaction score
- 4,819
- Location
- near Effingham, Illinois
- Hardiness Zone
- 5b
I wonder about the colder water, too, JW. I figured if it doesn't freeze, the fish are fine, but others say by running my waterfall, it's cooling the water more than necessary. I have waterfall, 12" water spout shooting up in the air, and skimmer going in koi pond. Stream and bog are running in the goldfish pond. No air or water bubbler running in either won't turn those on until temps get colder and threat of ice is imminent. For now, I'll keep it all running as I did last year. Stream never was shut off, ran all winter. I think with it on the ground, and not much above the water level, it's not cooling it as much as the waterfall would do. We shall see ....