I have had my tank up for about 6-7 months now and everything seems fine. my levels are at 0.0 on amonia,etc i have been adding a supplement
of calcium (Kent liquid) to raise the calcium level as well as dripping Kalkwasser. my calcium level seems to be going down,over the last two weeks my calcium has gone from 400 down to arround 360 or that is what my hagen test says anyway the aragonite in the main tank is fine but the refugium i just hooked up on last saturday has clumps of arragonite on the top layer of sand.
any suggestions???
thanks R.