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Help! Inbalance water chemistry!

tofubox

By tofubox,
in General Reefkeeping_

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tofubox Enthusiast

tofubox

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Hi guys,

I recently bought a Deltec CR along with a fixed peristaltic pump and American pin point ph controller. The flow rate is fixed, co2 is at 3 bps, ph set at 6.5 – 6.76. It has been running at this setting for about 3 weeks. I am using NSW.

Today, I did a check on my water chemistry. Alkalinity shot up to a horrifying 15.7dkh

Alkalinity - 15.7dkh

Calcium – 400

Magnesium – 1050

Ph – 8.0

I understand that my magnesium is too low, as I am not dosing any mag into the tank at the moment.

Couple of questions:

1. Is the low magnesium the reason for such a high Alkalinity?

2. Is my setting for the CR all wrong, explaining everything?

3. How can i lower my alkalinity safely? or just wait for it to drop?

3. Is there any recommended method is dose magnesium? My CR doesn’t have a secondary chamber for magnesium. So how can I best dose it?

I would really appreciate some advice! Thanks all!

 

I Love Stagsss

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