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- Jul 16, 2026
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Hanna Marine Master ammonia won’t drop below 0.54 ppm - anyone else?
I’m cycling a new Red Sea Reefer G2+ 350 Display tank: ~75 gallons + Sump operating volume: ~19 gallons. Tank was setup with live rock and live sand.
Timeline:
Has anyone else found that the Hanna Marine Master ammonia test never reaches zero? Did you determine it was a baseline issue or was your tank actually still cycling? Am I being impatient and expecting too much too soon?
Brand new to saltwater - help talk me off the ledge.
I’m cycling a new Red Sea Reefer G2+ 350 Display tank: ~75 gallons + Sump operating volume: ~19 gallons. Tank was setup with live rock and live sand.
Timeline:
- Initial test of tank on 7/11 read 0.35 PPM Ammonia
- Added an ammonia dose: Dr. Tim’s ammonium chloride (1ml)
- Tested after an hour 0.46 PPM
- Ammonia: 0.39 (7/12)
- Ammonia: 0.50, Nitrite 3 PPB 7/13)
- Ammonia: 0.45 (7/14)
- Ammonia: 0.48, Nitrite: 5 (7/15)
- Added 1 ml more Ammonia - 0.56
- Ammonia: 0.54, Nitrite: .5 (7/16)
- Tetra ammonia strip: 0 ppm
- No livestock.
Has anyone else found that the Hanna Marine Master ammonia test never reaches zero? Did you determine it was a baseline issue or was your tank actually still cycling? Am I being impatient and expecting too much too soon?
Brand new to saltwater - help talk me off the ledge.


