Care
Mar 4, 2026
Can I Add a Cleanup Crew Before Fish in a New Reef Tank?
Quick Answer
Yes—after ammonia and nitrite are zero, a small cleanup crew can be added before fish and often helps with early algae control.
Yes, but only after the nitrogen cycle is complete.
Safe timing
- Ammonia = 0
- Nitrite = 0
- Salinity stable near 1.025
Best starter cleanup crew
Start small with a few snail and one crab. Observe for a week before adding fish.
Common mistakes
- Adding too many inverts at once
- Adding before cycle completion
- Overfeeding to keep cleanup crew alive
Track additions and test results in the ReefBay app.
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