bobby
I like to do bad things.
I ran across this and figured it could help some people. This guy bought an assortment of nitrate test kits, tested them all, and gave his findings. I was planning on buying a new kit as mine is over 3 years old and it's helped me.
A test of Nitrate Test Kits - Reef Central Online Community
A test of Nitrate Test Kits - Reef Central Online Community