calcium low

New 90 gallon tank w/ 20 gallon sump (3 weeks old). Started testing Calcium with API kit and seeing (fast) linear drop. Just trying to understand why it's moving so fast and whether this is something I should address via Reef Fusion 2 part additives. Current Livestock & Date Installed...

Hello. I just finished cycling my Biocube 32. I used bottle bacteria (two brands) and fed it one round of ammonium chloride. Cycle went pretty much as expected over the course of 17 days -- ammonia and Nitrite were at 0 (with API) and at 0 and 0.2 using Salifert, respectively. Nitrate was over...

I’ve been dosing kalkwasser for a couple months now and my Alk has been rock solid stable. I haven’t tested my calcium because I thought those two would balance out evenly . Today I finally tested it and the result was a tad bit low. I try to keep the same parameters as my salt mix . I use Red...