Any idea what this white coating on my rocks is? Tank is 6 months old. I used Marco rock, so don't think this can be dead Coraline algae. I tried scraping it with a toothbrush and it barely comes off, just a few particles when scraping.
All parameters look fine. Corals look healthy.
Temp 79F
Salinity 1.025
Ph 8 API
Ca 440 Salifert
Mg 1440 Salifert
Nitrates 0 ppm API
All parameters look fine. Corals look healthy.
Temp 79F
Salinity 1.025
Ph 8 API
Ca 440 Salifert
Mg 1440 Salifert
Nitrates 0 ppm API