I haven't tested NO3 & PO4 in my 150g SPS-dominant tank for almost 6 months. I do keep tabs on Alk/Ca/Mg (8'ish/540/1320) and pH (8.2 - 8.5) via Fusion but testing N&P via Hanna is just a waste of time. Anyway, I was surprised (ok, shocked) to see that nitrate was over 75 (max on an ULR reagent) and phosphate was 0.60 - yikes! Everything is still ok and I didn't observe anything odd - no RTN/STN.
I've dozed PhosphateRx last night and will bring down phosphate to under 0.2 this week. As for nitrate - well, I suspect feeding a full sheet of nori ~5x/week + pellets & frozen contributed to high nitrate. I'm going to feed less nori (and likely frozen) to see if things settle down. I like to run nitrate between 20-30.
Curious if you guys are running a high nutrient system? If so -- any issues long term?
I've dozed PhosphateRx last night and will bring down phosphate to under 0.2 this week. As for nitrate - well, I suspect feeding a full sheet of nori ~5x/week + pellets & frozen contributed to high nitrate. I'm going to feed less nori (and likely frozen) to see if things settle down. I like to run nitrate between 20-30.
Curious if you guys are running a high nutrient system? If so -- any issues long term?