- Joined
- Jun 22, 2011
- Messages
- 4,684
- Reaction score
- 3,764
- Hardiness Zone
- 5b
- Country
gemma; in 6 years, I've never changed any water at all. I do fill-ups depending on if the bog or stream is diverting water, or because of evaporation, but no water changes at all. And I have nearly 100 6-12" gf in 2700 gallons. But I have lots of plants and a bog/wetlands upflow filter plus waterfall. And I am on a well re water source. So, I'm one of those that doesn't prescribe periodic water changes as necessary.