- Joined
- Nov 24, 2019
- Messages
- 30
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I have been fighting high Alk, 15+, and low pH, 7.6-7.9, for several weeks. Have a 30 gallon with fish, LR, and a few softies. I've done numerous water changes to the point I have done over 100% water changes over the last 6 weeks but not able to get ALK down and pH up. Using RO with TDS of 0 and mixing with IO salt. New water with IO tests around 11 dKH. Have HOB refugium and Marineland filter. I've stopped dosing Kalk and adding vinegar hasn't helped. Tank is over 10 years old with 3 inch sand bed.
Fish are doing well softies are OK but could be doing better. Other parameters:
Fish are doing well softies are OK but could be doing better. Other parameters:
Salinity: 35
Calcium: 450 -490
Magnesium: 1350
Phosphate: .08
Nitrate: 1
Temp: 79-81
Using Salifert and Hanna test kits to confirm test results. Usually test results are consistent between both. Sorry to be so wordy but don't know what next to do.