Calcium Precipitation?

ReEfErAdDiCt

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Woke up this morning to a "milky" tank. I've definitely seen this before(not with my tanks) online and I think it was due to calcium precipitation due to low mag levels. Anything else this could be?

Did a 20% water change. Testing calcium right now. Ran out of alk and mag tests. Will pick up hopefully today or try to borrow them if not avail at LFS.

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-Tank Size - 187gal DT, 230 total volume
-Age of system - 2 months
-Skimmers - Aquamaxx EV-600
-Filters - LR, Bio Pellets
-Current Livestock - 10 sm-md sized fish
-Feeding Habits - once a day formula 1 & 2 pellets, sm sheet nori
-Corals - mostly LPS
-Pumps - iwaki 100rlt, 2 jebao wp40's
-lighting - ATI Sunpower 48" 6 bulb


-Temp - 80°
-Salinity - 1.025
-Ph - 7.8 (lower than normal)
-Calcium - 409
-Alkalinity - tbd
-Magnesium - tbd
-Ammonia - 0
-Nitrites - 0
-Nitrates - 0

-Dosing Regimen if any - 2 part B-ionic when needed
-Water Change habits and Water source - 10% weekly, Scripps water

-Current Actions or Plans Taken since the Event occurred, If any-
Performed a 20% water change today. Will let cycle for today and if not cleared up by tomorrow will do another 10%-20% water change. Not really sure what else to do? Once I get an alk and mag test I will dose accordingly.
 

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