Randy Holmes-Farley
Reef Chemist
View Badges
Staff member
Super Moderator
Ultimate Member
Excellence Award
R2R App User
Expert Contributor
Article Contributor
R2R Research
My Tank Thread
I’m not sure there is anything more to the N source than from foods. The dry base rock may absorb a ton of phosphate before that sink stops taking it up, making it look like excess N, when perhaps it is not.