I’ve seen a recent decline in my corals. All of my SPS are losing color and “browning out”. There’s still some polyp extension but not like before. I did a recent ICP test and nothing looks to be out of line. The zinc level was higher than the ICP test previously done. I did some digging and found a veggie clip that had a magnet that was degrading. I removed it a few weeks ago hoping that may have been the issue, but haven’t seen any improvements. Now I’m noticing several of my zoa colonies are not opening. What do I look for now? I can not find anything out of the ordinary that could cause this issue. I’ve done several (10%-15%) water changes. No change. I’m not dosing anything. I have a calc reactor to maintain dkh, calc and mag. No new corals or fish added in the last couple months. No changes in my husbandry. So, now what???
Tank is 1.5 years old and my levels are as follows. System volume is roughly 135 gal. ICP test attached
Alk 7.5 - 8 (Trident)
Calc 420-460 (Trident)
Mag 1300-1400 (trident)
Temp 77-79
N03 5 (Nyos)
P04 .06 (Hanna)
Salinity 35
PH 8.0-8.3
Tank is 1.5 years old and my levels are as follows. System volume is roughly 135 gal. ICP test attached
Alk 7.5 - 8 (Trident)
Calc 420-460 (Trident)
Mag 1300-1400 (trident)
Temp 77-79
N03 5 (Nyos)
P04 .06 (Hanna)
Salinity 35
PH 8.0-8.3
Attachments
Last edited: