My parameters are stable within the recommended ranges, but Calcium has stayed at around 380 for many years. I have magnesium and calcium sources in my calcium reactor so the supply is stable using a dosing pump and when I fire up my kalk reactor as well Ca nudges closer to 400, but I rarely see higher numbers. At the same time the calcium load from corals can be from very low to moderate and the pumps wear down from abrasive effect of the excess Calcium in the water.
I've got Red Sea and Salifert Ca test kits. The Salifert will show lower numbers as it ages, but the Red sea kit also shows low values.
I keep Ph at 8.4 and Alk at 9, but it is used up faster than Calcium, even with hardly any corals present in my 400g system.
380 should be fine, but my tank has for years killed all SPS test frags in two weeks so figuring this out is a part of the problem solving.
I guess my main question is if Ca can be fully saturated in my tank below 400?
I've got Red Sea and Salifert Ca test kits. The Salifert will show lower numbers as it ages, but the Red sea kit also shows low values.
I keep Ph at 8.4 and Alk at 9, but it is used up faster than Calcium, even with hardly any corals present in my 400g system.
380 should be fine, but my tank has for years killed all SPS test frags in two weeks so figuring this out is a part of the problem solving.
I guess my main question is if Ca can be fully saturated in my tank below 400?