Hi no matter what I do I just cant seem to get my nitrates up in my 600ltr sps tank is there anything I can put in to raise them a little, at the moment nitrates are zero. and the corals look washed out, everything else is perfect. Thank you
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Yes a Deltec ap 600Do you have a skimmer

I'm having a similar issue. My nitrates are very low and phosphates are testing 0 both with salifert kits. I have steadily been losing colony after colony. About 6 weeks ago we moved from a 190gal to a 240 gal tank. The only thing that was changed was the substrate and I added a bigger return pump for flow. My orp reading is running around 308 using apex. One of the guys at a lfs told me to dose hydrogen peroxide (h2o2) at 1 ml per 10 gallons for a while to get the orp to come up.
I've lost so much acro that in willing to try it. I have been using an amino acid, and dosing to bring up alk and cal. Mag has been running ok. All the zoas and lps seem fine too. Although last night my brain had its mouths open and it was a little shriveled looking...
Is phosphate an issue?
I'd feed more (also adds phosphate), or use an amino acid supplement (may or may not add phosphate, depending on the purity of the amino acids.![]()

