wow that crazy... But I know on a hanna it won't read 0 that's my point... My colors are good, I don't have hair algae and that's okay with me... Ive seen less color on some of the tanks here that look beautiful in pics and in person, well let's just say that's why I asked you to take some macro shots of my corals... A lot of people say low nitrates mean nothing in corals but the coral colors don't lie...