I lost an acro frag just a week or so ago due to RTN. Turns out it was due to a low temperature. Now I have spotted that my millepora frag is losing some tissue as well. My parameters seem pretty ok but there's definitely something wrong going on here. I also have a small patch missing from my chalice as well. Do I have a parasite in the tank or are my parameters the problem? I know my Ca is on the low side and I've been dosing daily and testing to ensure I am elevating the levels. The tank will the 5 years old this year and is 29 gallons. Parameters are as follows:
Ammonia 0.25
Nitrate 5.0
Nitrite 0
pH 8
Phosphate 0.25
Calcium 380
dKH 8
Magnesium 1230
Temp 78-80
Ammonia 0.25
Nitrate 5.0
Nitrite 0
pH 8
Phosphate 0.25
Calcium 380
dKH 8
Magnesium 1230
Temp 78-80