I am looking around for a test kit i trust. The API i had for Nitrates was very yellow like 5. when i used my test strip it came out to 80. LFS also got 80. Salifert is a little much, I don't trust API anymore. redsea and seachem seem to be a little hard to use. I liked the instant ocean one's back in the day but i can't seem to find the kits anymore. Tetra makes strips now but not in all test. Maybe its just worth paying LFS a few dollars to find out what i need to know.