Dissimilar results alk test API and Redsea pro

[avery155]

So I had alk all jump with my API test while dosing from 8.5 to 13 overnight.

My red Sea pro kit came in today I tested it with a result of 8.4 dkh, my API reads 10.

API test kit is about a year old.

Which should I trust?

 

[fijisrfr]

Red Sea


Sent from my iPad using Tapatalk

 

[avery155]

That's what I thought thanks!

 

[RobZilla04]

Toss the API IMHO.

 

[nereefpat]

I'd call it a 9.2.