Question about Hannah checkers

[Seriak]

Originally Posted by reefwars

alk and phos are awesome calcium sucks, lr i like the ulr not so much

I use a Hanna kit for alk and I also read that Calcium wasn't as good as the elos kit. I should have listened to Dave/Denny at Concepts as the Elos kit for phosphate is fine but comparing colors at low levels is not as good as a digital reading.