guppylvr11
Aquarium Advice Activist
- Joined
- Apr 26, 2017
- Messages
- 116
I have a Tetra Whisper 10i filter. It uses bio bags. How often do I change these bio bags? It looks a bit dirty but I don't know if it's time to change it? Also, how do I change it without causing my tank to go through a mini cycle?