Faulty test kit or high levels?

[BitFix]

I just tested alkalinity,magnesium and calcium using salifert test kits. Alkalinity came at around 10, but calcium and magnesium came above saliferts chart, the instruction tell to use 1 ml and wait for the solution to change colors, but when I do it it takes more than 1 ml for the solution to change colors (both took about 1.5 ml). Can my calcium levels be above 500 and magnesium be above 1500? Or are my test kits faulty?

 

[Flippers4pups]

Are the test kits within expiration dates?

 

[BitFix]

Are the test kits within expiration dates?

Yes, they all expire on 2023

 

[elic173]

Make sure you are following the mix instructions perfectly. There are videos you can watch online. Also take a sample of tank water to your LFS so they can do a comparison test. Hope that helps
Ed

 

[PatW]

Make sure you are following the mix instructions perfectly. There are videos you can watch online. Also take a sample of tank water to your LFS so they can do a comparison test. Hope that helps
Ed

This is probably your best course of action. You have several possibilities: faulty test kit, faulty tester, or high levels. A test at the LFS could resolve this. Also take your test kit and do a rest in front of the LFS person. They will be able to confirm your procedure.