Issue with magnesium

[leonk]

Hello I just finished my tanks cycle and my numbers are looking good other than magnesium and calcium since I was using the wrong salt so it’s starting to slowly creep up again magnesium was at 250 and now is at 320 afew days later so it should be fine but my magnesium is at 750 from the salifert test and my Hanna checker couldn’t even read it since it was below 1000 here are my numbers! Also getting my nitrates up slowly at the moment! But really concerned on my magnesium got coral and fish in already so need to move abit faster!
3/30/24
Salinity 1.026
Calcium 304 was at 270 afew days ago dosing to get up
Magnesium 750 on salifert
Nitrate hr 1.0
Alkalinity 8.0
Ph 8.1
Phosphate 0.03

 

[Idech]

The easiest is just to do big WC with the right salt. Keep doing it until your levels are good.

 

[leonk]

The easiest is just to do big WC with the right salt. Keep doing it until your levels are good. The tank is empty so it won’t bother anything if it takes a few days.

The tank has corals and fish over 8 corals and 2 clown fish a wrasse a Tomini tang and a cleaner shrimp

 

[Idech]

The tank has corals and fish over 8 corals and 2 clown fish a wrasse a Tomini tang and a cleaner shrimp

Yes, I edited my post. I don’t think it matters for fish. Do a 50% WC to start, measure and do another one the next day.

 

[homer1475]

I would first question salinity. I've never seen a salt that mixed that low.

With mag being that low, and ALK and calcium inline, I would expect to see massive precipitation.