No calcium in tank

[805reeftank]

Going through a cyano battle and decided to do a chemiclean treatment at the end of day 2 most of the cyano is gone. Started a batch for a water change. So I decided to test, haven’t done a full test since 8/5 ( everything tested within my normal range) Usually only test the main 3 alk, po4, no4 and those are always normal.

So I decided I would do all of them today. Calcium is not reading. Never changed to pink then blue, it just stays blue. I tested the batch water and tested fine. So now I’m thinking maybe my doser is clogged, nope all dosers are level the dose in equal parts. Then I think I just made new solution maybe I forgot to put calcium chloride in it, nope. I tested the solution and it’s saturated.

Corals haven’t been looking the best because of the cyano but this morning things just looked off. That’s what prompted the testing.

Anyone ever had this problem?

I’m using the salifert calcium test expires 2030

 

[cilyjr]

He's using the new salifert calcium test

 

[805reeftank]

He's using the new salifert calcium test

Totally forgot to add that lol

 

[Randy Holmes-Farley Verified Community Expert]

Duplicate thread. No need to post multiples, please.

From the other thread:

Try testing some new salt water.

If calcium is around 300 ppm or lower it will start blue, because the kit skipped past the endpoint.