- Joined
- Apr 29, 2020
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- 1,060
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- What state or country do you live in
- Minnesota
Hello I’m upgrading tanks and I’ve started my fish less cycle with ammonia and dr Tim’s. When it’s ready can I keep a cycle going with just one fire fish in a 100 gallon tank ? I have 70 lbs of rock.

Bacteria will be fine. They could probably live off the skin particles floating in the air and landing in the tank...

