milsaltnewbie07
New member
Hey guys I been trying to lower this calcium for a while now but wont budge. Keeps reading 580-600. Im using red sea salt ( blue bucket) and mixed at sg 1.026 im getting 420. Now im not doing any calcium at all and Im doing my WC's every other week. 15%. My alk is at 8, ph 8.2. What im I doing wrong, this calcium wont budge. Should I worry ??. Also I have have started to get this black coraline algea on my rocks. Is this normal?