I came home last week and all my sps had STN. I quickly did a water change and tested the water i took out. These are the readings.
CAL-430
ALK-7.8-8
MAG-1380
NO3-0
PO4-0
NO2-0
PH-8.0
AMMONIA-0
Only changes or additions i made was a new skimmer 2months ago other than that nothing new for the last 6-8months. Missed 1 water change this month. The test kit i use are Salifert and cross check with elos and hannah checker for po4. Corals are now showing burnt/dead tips and almost little to no polyp exten for my montis.
What should i do?
CAL-430
ALK-7.8-8
MAG-1380
NO3-0
PO4-0
NO2-0
PH-8.0
AMMONIA-0
Only changes or additions i made was a new skimmer 2months ago other than that nothing new for the last 6-8months. Missed 1 water change this month. The test kit i use are Salifert and cross check with elos and hannah checker for po4. Corals are now showing burnt/dead tips and almost little to no polyp exten for my montis.
What should i do?