superchargedgp
Well-known member
we are using API now, but i didnt read too many good reviews about it
I have SPS so I check alkalinity the most. I find that API gives me the same readings as the hanna and Red Sea ( I have all three of them ). I use Red sea for cal/mag/nitrates/phosphates testing. I don't check pH because if your house is well ventilated, and your cal/alk/mag are good, your pH should be good also.
I have used both API and Red Sea Kits in the past
Have found the Red Sea to be a bit easier to use and more accurate
It would my recommendation to you