i am using rowaphos in two phosban reactors i have 480 total gallons of water (320 reef, 160 sump) so i feed quite a bit of dt's and other stuff to get to all my corals my phos got to .8 put reactors on a couple of months ago and now my phos is .1 using tropic marin phos test but would like to know more about photo meter
thanks for the reply, Hanna makes a great photo meter, you can really get a grasp on your po4 level with it. Any other test kit is no comparison to it.