I just bought a hanna checker for Kh that reads dkh. Upon three tests versus my Red Sea Kh tests, my hanna checker says Kh is 7.9, Red Sea says 9.1
Anyone else see a big difference like this? I cleaned the tubes on the hanna checker like the instructions says.
Im stumped on which one to believe now.
Thanks.
Anyone else see a big difference like this? I cleaned the tubes on the hanna checker like the instructions says.
Im stumped on which one to believe now.
Thanks.