bgmann12
Aquarium Advice Freak
- Joined
- Apr 17, 2014
- Messages
- 420
Of course they do, you just throw most of it away when you change the cartridge.I'm also thinking the filter hasn't been cycled since those filter cartridges don't hold enough media for enough bacteria to grow.
If they didnt, then just about every aquarium on the planet would have constant levels of ammonia.I'm also thinking the filter hasn't been cycled since those filter cartridges don't hold enough media for enough bacteria to grow.
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