View Full Version : Magnesium and calcium levels okay but alkanity is low

02/12/2013, 10:27 PM
Hi forum.

I just recently started testing my water and here are the specs:

Calc: 483
Alk: 6.88
Magnesium: 1300

Is seems that my alk is a bit low based on the recommended levels.

I don't have alot of corals (mushroom, small monti cap, few zoas, gsp, frogspawn, ricordea, torch corals) in a 90g. Most are growing slowly under 4T5 bulbs and running for about 7 hours.

I bought the 2-part b-ionic additives. On the instructions, it says to dose both solutions (ca +alk). Is it possible just to dose the alk since i'm low on this?

I heard/read that I have to be careful on dosing so that the ca and alk don't get out of whack.

Thanks for any feedback and recommendation that you may have.

02/12/2013, 10:47 PM
You can dose the b ionic Alk only in increased dosage until desired level, then dose the consumption rate.

Prairie Reef
02/12/2013, 11:00 PM
Or baking soda - better yet bake your baking soda at 425 to make washing soda and add 1/2 tsp per 50 gal once a day in a high flow area of the sump until you reach the desired level. Much cheaper.

02/12/2013, 11:03 PM
I agree that baking soda will work. This calculator will hep with picking doses: