Got it.Who wants to take this one? I get tired of showing off my elevated po4 beauties
@nornicle Below is what .12-.15 looks like. I should say that this system is nearly 5 years old now, and ran lower for the first 3-4 years and did OK. Never had an algae problem.
Did have a dino outbreak when I messed with the overgrown aquascape, tearing half of it out.
As has been said several times though, stability is more important than the nutrient number IMO.