In my 120 gallon I have 32 Acro frags (3 about yr old mini colonies now, and the rest new within the last 3 months), along with a couple montis, snails, and finally starting to see the start of some coraline algae growing on the glass.
I picked up a DOS about 2 months ago and switched over to 2-part from Kalk dosing at that time. I've been dosing 21ml of BRS 2-part daily, holding an Alk level at 7.3dkh. However, my Calcium levels have been at 450. So over the past week I've been trying to lower that just a little to a more naturally 430-435 level. In order to accomplish this, I've turned off the Ca dosing, and am only dosing 21ml of Alk for the past week. And here is where I am confused????
Despite not dosing Ca at all this, my Alk level has still remained stable, but my Ca literally has not budged. According to my Red Sea test kit my Ca at the start of the week was 450, and then as of today, it is still reading 450.
Magnessium is ranging right around 1380.
Is there any reason why I would not be seeing a decline in Ca? This seems really odd to not see Ca change at all! Especially with so many acros in my tank...yes, small frags, but still! Thoughts, or suggestions would be very helpful.
Here is a pic of my tank! I took all the sand out of the tank about 4 months ago due to an algae issue at the time.
I picked up a DOS about 2 months ago and switched over to 2-part from Kalk dosing at that time. I've been dosing 21ml of BRS 2-part daily, holding an Alk level at 7.3dkh. However, my Calcium levels have been at 450. So over the past week I've been trying to lower that just a little to a more naturally 430-435 level. In order to accomplish this, I've turned off the Ca dosing, and am only dosing 21ml of Alk for the past week. And here is where I am confused????
Despite not dosing Ca at all this, my Alk level has still remained stable, but my Ca literally has not budged. According to my Red Sea test kit my Ca at the start of the week was 450, and then as of today, it is still reading 450.
Magnessium is ranging right around 1380.
Is there any reason why I would not be seeing a decline in Ca? This seems really odd to not see Ca change at all! Especially with so many acros in my tank...yes, small frags, but still! Thoughts, or suggestions would be very helpful.
Here is a pic of my tank! I took all the sand out of the tank about 4 months ago due to an algae issue at the time.