Low Calcium / High Magnesium?

[scottduncan1234]

Hi all, hopefully a quick question tested my levels tonight and my cal is low at 390 while my mag is high at 1380?

Usually I dose 20 grams of red sea coral foundation abc+ whenever my cal drops below 400 but usually my mag drops with it so this time I am confused what I should do...

ABC+ is a combined powder of Ca/Sr/KH/Mg/K/Br

Other params are: ph 8.1, nh3/nh4 0, n02 0, no3 10, kh 9/3.2, sg 1.022

Most corals are all frags, one 2 inch montipora cap, 3 headed hammer, 2 frags pallys/zoas, one small 4 branch birds nest, and one unidentified sps frag (trial peice got for free)

Thanks for any help

[Voodoo Corals]

Buy individual Alk,mag and cal. Never use combine anything as some get used more than others.

[RA]

Your salinity should be higher 1.025 - 1.026 range. What are you using to measure salinity?

[Mark9]

1380 is not really high for mag.
Your salinity is a bit low for corals though, get it up to 1.025.
I've used Kent Tech-CB part A to raise only calcium, works like a charm.

[OnceTrueFalseBr]

Do you have individual calcium and magnesium dosing supplements?

[RA]

You have to remember that the numbers for alk, cal & mag are all based on your salinity being 1.025. If you raise the salinity those numbers will change.