Precipitation in the tank?

[Aquanic]

I recently added about 15 new coral from WWC (all doing well and open) about 2 days ago, however, the addition seemed to have thrown my chemistry off. The tank’s water became cloudy and doesn’t seem to be homogeneous. I have a 36 watt UV sterilizer, so I don’t believe it to be a bacteria bloom.
some info ab the tank:
90 gallon display with a 20 gallon sump
Bare bottom
3 months old (started with live rock)
Dosing kalk and magnesium
Alk: 10.9 (I know is high)
Ph: 7.8 (lower than normal, has been around 8.2-8.5 till added coral)
Magnesium: 1200
Calcium: 477 (also high)
I was just wondering if this is precipitation of calcium or something else. Everything is open and looks happy.

 

[blaxsun]

That's definitely cloudy. I had something similar happen once, but I can't recall what I did to trigger it. Are you adding any other reef supplements?

 

[Aquanic]

That's definitely cloudy. I had something similar happen once, but I can't recall what I did to trigger it. Are you adding any other reef supplements?

Just seachem kalk and fritz magnesium. When I feed I’ll put in seachem reef plus vitamins and amino for the coral

 

[Pistondog]

If you put the frags in the sand, you may have stirred up bacteria, causing the bloom. If you vacuum the bed regularly, then perhaps not.
Why would adding corals throw off water chemistry?

 

[Aquanic]

If you put the frags in the sand, you may have stirred up bacteria, causing the bloom. If you vacuum the bed regularly, then perhaps not.
Why would adding corals throw off water chemistry?

There’s no sand in the tank. The corals could have effected it in some way cause they uptake calcium, alk, and magnesium, and adding that many (I pretty much doubled the coral in the tank) could have made those values swing.

 

[blaxsun]

Just seachem kalk and fritz magnesium. When I feed I’ll put in seachem reef plus vitamins and amino for the coral

Is it possible the kalk and magnesium are reacting with each other?

 

[Aquanic]

Is it possible the kalk and magnesium are reacting with each other?

Hmm. I’ll check the doser to see if they are dosing at the same time. Other than that they shouldn’t be reacting. We’re gonna find out if a water change fixes it today

 

[Aquanic]

Update this morning: the water change seemed to have cleared things up.