Dosing Mag. and Turbo Calcium?

[Craig Lambert]

I have 90G of IO saltwater mixing in my garage to set-up a tank tomorrow. Salifert tests show the following:

ALK: 11.2 dKH
Calc: 370
Mag: 1180-1200 (hard to get that level teaspoon)
pH 8.2

I think these readings are pretty standard for IO when freshly made.

I would like to bring Mag. up to 1300. I'm going to dose ESV-B-Ionic Magnesium. (Sure takes a bunch of this stuff to move up 100ppm) Can I dose this all at once? or should it be over a few days?

I would like to target 430 for Calcium. (A 60 ppm increase) How many ppm per day can one increase their Calcium level? And can I begin dosing a calcium suplement at the same time I'm raising the Magnesium level, or should I get that to 1300 first?

Thanks

 

[Randy Holmes-Farley]

Yes, the readings look typical.

Dosing to the garage reservoir of new salt water can certainly be done all at once for calcium and magnesium. I do that.

You might do magnesium first (if only by a few minutes) to reduce the likelihood of precipitating any CaCO3 when adding the calcium.

This calculator shows how much to use:

Reef chemicals calculator
http://home.comcast.net/~jdieck1/chem_calc3.html

 

[Craig Lambert]

Thank You Randy!

 

[Randy Holmes-Farley]

You're welcome.

Happy reefing.