About a month ago, I started dosing KNO3 and Phosphat-E to balance nutrient levels. I had no detectable NO3 levels and PO4 levels around 0.25ppm according to the Hanna ULR Phosphate https://hannainst.com/phosphate-ultra-low-range-colorimeter-checkerr-hc-hi774.html
I tried GFO, but because I only had a bag in the sump it wasn't very effective. I subsequently went with the Phosphat-E in an attempt to get the PO4 under 0.1ppm or so. With repeated dosing, I could only get it to about 0.15ppm, though I was able to raise NO3 to around 2ppm. My latest Triton report is listed here https://www.triton-lab.de/en/showroom/aquarium/auswertung-b/icp-oes/74258/ which looks like it is indicating a PO4 of about 0.0070 ppm and high lanthanum. So clearly, to me this means I need to STOP dosing the Phosphat-E now. However, my question is, how should I further monitor phosphate levels? I would assume the Triton is more accurate as the home test has user error...My SPS don't look too hot (and haven't in a while, which is why I started dosing in the beginning) Should I use a PolyFilter to try to reduce the Lanthanum and Lithium?
I tried GFO, but because I only had a bag in the sump it wasn't very effective. I subsequently went with the Phosphat-E in an attempt to get the PO4 under 0.1ppm or so. With repeated dosing, I could only get it to about 0.15ppm, though I was able to raise NO3 to around 2ppm. My latest Triton report is listed here https://www.triton-lab.de/en/showroom/aquarium/auswertung-b/icp-oes/74258/ which looks like it is indicating a PO4 of about 0.0070 ppm and high lanthanum. So clearly, to me this means I need to STOP dosing the Phosphat-E now. However, my question is, how should I further monitor phosphate levels? I would assume the Triton is more accurate as the home test has user error...My SPS don't look too hot (and haven't in a while, which is why I started dosing in the beginning) Should I use a PolyFilter to try to reduce the Lanthanum and Lithium?