My tanks issue - Very Low Mg, Very High KH

[surreal1228]

Hi All

I recently did my water check for my 2nd tank, and found the Super high KH and super low Mg.

KH - 14

Mg - 1050

Ca - 410

PH - 8.1

PO4 - 0.5

150L tank with LS are 2 LPS Bubble, 5 SPS and 5 clown fish, some zoas

any idea what happen?

i have tried 4 days to buffer up the Mg 90ppm every day, but still drop back to 1100.

also try to boost Ca up till 430 only

any way to bring down the KH and up the Mg?

thanks bros here to give advice

[Harlequinmania]

Just keep bringing up your mg and ca, and kh should start to fall. What test kit are you using?

[surreal1228]

Thanks bro,

Now ca at 460, mg 1100, kh 14.....

Test kits are salifert, and API

[solasido]

Hi bro, I find this link very useful which I used as reference to correct my water param

http://www.advancedaquarist.com/2002/11/chemistry