TheFragile
Aquarium Advice Regular
- Joined
- Apr 5, 2015
- Messages
- 96
I currently have a 6.5 gallon tank running a whisper 10i filter. Getting a 20 gallon set up. I'm planning on running both filters to establish bacteria in the new filter. What is a good amount of time to do this for? How long before it would be safe to remove the old filter?