Cal alk and mag

[Pcreefer]

I got a 300 display tank with a water volume around 350 just did water change Sunday of 80 gallons with reef crystals I got mostly Lps some sps and soft coral I can't seem to get my cal alk and mag to raise my salt is 1.025 cal 370 kh 10.9 mag 1140 I wanna raise them I got two little fishes part a b and bright well magnesion is there better stuff to raise them my phosphates is at 0.5 just in case it matters I also have a dual calcium reactor that's running but the co2 is off

 

[Randy Holmes-Farley Verified Community Expert]

The alk is high enough. The magnesium product is fine, as is the calcium part of the two part, but the latter is more expensive than simple calcium chloride. Don't dose the alk part of the two part.

Use a calculator to determine the dose. Both will take a large amount in that size tank.

 

[Pcreefer]

Ok I just used the reef calculator and it's telling me I need 94 fl oz to bring my cal up to 450 the bottle from two little fishes is 32 fl oz is it ok to pour that whole bottle all at once and every other day pour another bottle to get it where I want it to be thanks

 

[Randy Holmes-Farley Verified Community Expert]

Yes, that's what I meant by a large amount.

DIY might be in order.

 

[miamiangler]

Bring It up slowly or you will kill your corals . 2-5 ml per 10 gal daily and don`t do more the 50ppm a day