Phosphate test kit ?


What test kit do you recommend? I found many brands and wondered if one is better than the others. Nutrafin, Tropic Marin, Red Sea, Instant Ocean, Seachem, Salifert, and AP.
I remember reading a post once that said most aren't any good.
What do you think? Thanks in advance for any advice.


Active Member
I've used SeaChem phos test for years and had a friend at a fisheries research lab check the results; it was very accurate. I've used SeaChem since and swear by them. I'm using all SeaChem tests now, even though I don't test much anymore---except in my reef.