Hey All - so relatively new (4 months in) and my tanks been doing fine. A few days ago I noticed the corals all didn’t seem to be doing well (not expanding) so I did a water change with LFS reef crystal pre mixed water. Still didn’t help. I do regular water changes so never really needed a salinity measurer. I tested and noticed that my magnesium was really high at 1700 and calcium also high at 700. Did some research and saw that this could be due to salinity problems, so I bought a refractometer. Tested today and found it to be 1.038 which obviously is not good. Added a bunch of RO water and it immediately went down to 1.030 (still high). Checked a few hours later and it went up to 1.035. Did a larger water change with RO water and it went down to 1.025. Checked a few hours later and it was up to 1.030
How does it keep going up? I’ve done like a 25% water change with just RO water and it isn’t helping as much as I thought it would.
Also:
Nitrite: 0
KH: 140
Phosphate: 0.25
PH: 7.8
Nitrate: 2
Ammonia: 0
Alkalinity: 7
Calcium: 700
Magnesium: 1700
How does it keep going up? I’ve done like a 25% water change with just RO water and it isn’t helping as much as I thought it would.
Also:
Nitrite: 0
KH: 140
Phosphate: 0.25
PH: 7.8
Nitrate: 2
Ammonia: 0
Alkalinity: 7
Calcium: 700
Magnesium: 1700