For those parameters, API works well enough. For more precise measurement of calcium, alkalinity, and magnesium, I recommend Elos.
Which kit are you having trouble with? I'd be happy to help out. I've noticed that when I notice an odd result, it is usually my fault, not the kit, so there is always possible user error. Then you could also have a potential bad batch, but that has only happened to Elos once that I'm aware of.I bought the Elos kit and I can't get it to tell me any thing.![]()
I use the Master API kit for the basics (Amonia, PH, Nitrate, Nitrite) and then Calc, Mag, Alk, Phos I use individual Salifert kits. Never tried ELOS so can't comment.
Amp: are the ELOS kits all better than the Salifert?
Which kit are you having trouble with?