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Whoops. I use them, too.? I use API for Ammonia, Nitrite and Nitrate.
I don't think API is as bad as some say they are. I personally use Hanna Instruments Checker for Alkalinity, Calcium & Phosphates. For pH, Ammonia, Nitrite & Nitrates I use Elos USA Kits. Either way though, I've experienced good results with either.

I agree. API for the minor tests they work good. Its normally user error on the Nitrates, as the bottles need to be shakin up for a bit before use, then the test needs to sit for a few minutes.Just heard they not as good. Point is testing needs done . If api is good then im glad to hear that. So many opinions on brands on here
Does instant ocean lifeguard have copper

