Help low calciume and high alklinaty

[fhd]

I test my water last day my tank 200 gallon and the problem is the calciume is low around 200 ppm and the alk is high 15 magnesium is 15
What should I do now to rise calciume and reduce alklinaty?
I had seachem fusion 1 and 2 but I try to avoid to add full portion of fusion 2. My tanke is 50 days old. Any idea? Thanks in advance

 

[thumperss]

whats your ph and you say your magnesium is 15 or 1500 ppm

 

[fhd]

whats your ph and you say your magnesium is 15 or 1500 ppm

My ph Is 8.2, yes 1500 magnesium

 

[thumperss]

your magnesium is way up there it needs to be around 1300 1400 and as that lowers your ca will go up whats your alk ?????????

 

[fhd]

Alkalinity is 15

 

[thumperss]

do a water change dont add anything everything should level out

 

[thumperss]

it may take a few days

 

[fhd]

Ok 10 percent enough or more I am using nt lab test for calciume and alklinaty and seachem for magnesium

 

[thumperss]

take some water to your fish store ask them to test it if your levels are the same as yours do a 20 %