Just had a question for everybody that wants to chime in. Problem: my magnesium never seems to drop and even seems to climb sometimes. I have a 125 parameters today mag 1600 calcium 350 alk 7.2. I dosed calcium to 420 and alk to 8.2. I change 10gal/week and occasionally do a 40 gallon water change. Should I assume my mag test is bad because it is always high or just the live stock demands lots of calcium? Live stock (coral) 7 sps frags to small colonies and a derasa clam. Any thoughts on this I would appreciate it, and it has been a while so hello again everyone!