Too much Calcium?

[ScottsTanks]

Is there a danger in having "too much" calcium in an aquarium? My FOWLR system has, on average, 600ppm of calcium and I don't have any corals to help use it up. Could these levels impact my tank negatively?

Tank specs:
40gb tank, 15lbs live rock, 1 peacock mantis, 5 astrea snails, ~20 nassarius snails. 1.026 SG, 78.4*F.
Chemistry results from 5 minutes ago using API testing liquids:
Ammonia 0ppm, Nitrite 0ppm, Nitrate 5ppm, Alk 10dkh, Calcium 600ppm, Phosphate 0.25ppm, 8.3 pH

 

[Piranhapat]

I won't trust API test. But nothing to worry about it. What brand of salt are you using?

 

[ScottsTanks]

Kent Marine

 

[Randy Holmes-Farley Verified Community Expert]

That salt has traditionally been quite high in calcium, and is likely OK, but just don't add any more in any additives.