Top positive review
15 people found this helpful
If you use the Nature-2 sanitizer, this is the only strip you need.
on July 12, 2015
This is the way to go if you are using Nature-2 as your sanitizer. Don't try to figure out your spa chemistry using regular test strips for chlorine or bromine sanitized spas, they won't tell you what you need to know. Free chlorine is not important because the Nature-2 system keeps free chlorine very low, about 0.5ppm, and most test strips will have a hissy fit. The key element with Nature-2 is monopersulfate (MSP) and very few strips measure this. After months of chasing readings and doing research, I finally found that the Nature-2 test strips covered exactly what I needed.