pH 7.8
Ammonia 0ppm
Nitrite 0ppm
Nitrate 20ppm
Alkalinity 9.8 dKH
Calcium 440ppm
Phosphate 0.15ppm
Magnesium 1400ppm
Salinity 35.5 ppt
Had an alkalinity spike a couple weeks ago, along with high phosphates that have been falling from 0.25ppm.
Very high nitrates from too much feeding were brought down from 60-80ppm to 20 over the last couple weeks as well.
Could any of these factors be the culprit for bleaching in my acros, birdsnests, and montipora? Should I test for potassium?
I’ve added the acros after the parameter swings and they are now bleaching from the stem as well.
Tank is 4 months old with invertebrates and no fish yet.
