How much calcium is my tank using per day.

BOMPH · Sep 1, 2016

I dose B-ionic 2 part, and I run each dosed for 2:30 each hour, so at 1.1 ml a minute, I calculate that as 60.6ml per day. My Ca levels have been very constant for 2 weeks now, so that tells me that I have it dialed in that I am replenishing what my corals are taking up pretty close.

Does anyone have any info on how much Ca per day that means my tank is utilizing? I am looking to also dose Red Sea Coral Colors, and those instructions day the dosing regimen is related to the Ca uptake.

My tank is 100G net volume
Alk: 8.9dKh
CA: 425

Thanks!

Randy Holmes-Farley · Sep 1, 2016

You can determine calcium per day using this calculator (assuming the 1.1 mL per day is accurate, which it may not be unless you measured it).

http://reef.diesyst.com/chemcalc/chem_calc3.html

BOMPH · Sep 1, 2016

Randy Holmes-Farley said:
You can determine calcium per day using this calculator (assuming the 1.1 mL per day is accurate, which it may not be unless you measured it).

http://reef.diesyst.com/chemcalc/chem_calc3.html

Thank you. My original math was wrong, Im dosing 66ml /day. I tweaked the numbers for current and desired (410 and 430.56 respectively ) such that I got 66 ml required for 100g. This tells me that if i had no uptake i would be increasing my calcium by 10.56ppm each day. So I have a baseline, and will certainly measure the output of my doser to ensure it is putting out what it is advertised at still. I did this when I first installed it in June 2015, but have not gone and done it since. Thank you for pointing this out, i hadn't thought to double check that.