Question about Hannah checkers

[reefwars]

Originally Posted by jesse1884

yes the digital readout is what cought my eye ive read that the calcium reads a bit high at times but ive read reviews and i get mixed comments........ im just simply sick of guessing colors


what is soo bad about them they just not accurate??

well in order to get an accurate reading from the calcium you need to use di water, on top of that they have you adding different things at different times in very very small amounts so the margin for error is high.

i find its just as much work for the elos test for calcium as it is for the hanna calcium , but the elos doesnt add such small amounts of reagents.


the ultra low range test kits are good its just if your not ultra low then its not needed.