Salifert and seachem ammonia disagree?

[fisherdonk]

Hello,

My seachem tag says "SAFE" levels of ammonia. However my saliert test shows unsafe levels at ~0.25 mg/L. What's up with this? Is it because I have high nitrate/nitrate?
I used Prime to "detoxify", wondering if it affects salifert nitrate or ammonia readings?

 

[doubleshot00]

Welcome to the club. Dont trust those tags. My QT tank crashed today and it said safe. Test said 2 and not .2.

 

[fisherdonk]

I do trust the tag actually, because this has been the current state for 4 days. Tag changed from alert to safe after prime, but not salifert.