Hi all need some guidance here , I have a mixed tank of lps and a couple of sps . Last month I noticed my birds nest coral and milipora started to turn white . I found my nitrates were on the high side of 30 ppm . However all my LPS were opening well with full polyp extension. I started dosing Aqua forest nitraphos minus with pro bios and did a 20% water change . About 20 days later my nitrates were 13 ppm . My frogspawns 2 of them , 1 hammer snd 1 pink goniopora has now gone half the size they used to be . I’m thinking if I had brought my nitrates down too fast and what should I do . My other parameters as follows
PH 8.3-8.45
KH 8.75-8.9
Cal425
MG1470
Nitrate 13
Phosphate 0.06
Ammonia 0
Nitrite 0
SG1.025
Temp 25 degrees C
PH 8.3-8.45
KH 8.75-8.9
Cal425
MG1470
Nitrate 13
Phosphate 0.06
Ammonia 0
Nitrite 0
SG1.025
Temp 25 degrees C