Hanna alk checker yes no?
 

Its time to order a new alk test kit! Is the hanna any good i am thinking about ordering it along with my ulr phosphate 736 checker. I was also wondering is there any need for the others calcium, iron, iodine?

I use the PO4, Ca, and Alk checkers and like them all. I've read some people have difficulty with the CA checker but I've never experienced any issues.