I think my test kit has gone haywire

[Silvio]

I did a baseline test before adding Calcium. Result was 320. I added 60 ml of the calcium part of Randy's 2 part additive. The next night I got a reading of 360. I added 40 ml and when I tested the next night, I could not get a reading. I have tried the test 2 more times over the next 24 hours and I cannot get a reading. The sample water turns light blue after I add parts A and B. But it does not turn clear again regardless of how much of part C I add. I got the test kit in September, but only started using it a few weeks ago.

 

[Jim Tansey]

It would be helpful to identify the kit in use and those with experience with it can comment.

Jim

 

[Silvio]

It's a Tropic Marin kit. Got it at MACNA.

 

[NateHanson]

ug. I hate that kit. sooooo hard to tell when it turns from bluish-clear to clearish-blue. Personally I'd say get another kit. I bought one once because I couldn't get salifert, and I used it twice before banishing it to the basement.