Nov 13, 2016 #21 Randy Holmes-Farley Verified Community Expert Reef Chemist View Badges Staff member Super Moderator Excellence Award Expert Contributor Article Contributor R2R Research My Tank Thread Joined Sep 5, 2014 Messages 72,100 Reaction score 69,741 Location Massachusetts, United States Rating - 0% 0 0 0 reeferfoxx said: Dependent of po4 measurement, how long can it take for GFO to be considered "used"/"exhausted"? Click to expand... At >0.2 ppm, it might be less than a day.
reeferfoxx said: Dependent of po4 measurement, how long can it take for GFO to be considered "used"/"exhausted"? Click to expand... At >0.2 ppm, it might be less than a day.
