The lower picture I had pea puffers & dosed more because i had more plants.
But now I have around 40ish shrimp & dose a tiny bit. I don't even know if it's the right amount, I took my comprehensive bottle, poured it in a spray bottle & diluted it with water. So I do one spray every 4 days. I kind of messed around spraying a lot at first to kind of find a balance of algae & no algae. I expect the bottle to last me at least a year