Are you running a reverse lit refugium..? I'm always tending toward raising the pH if all else is in check... btw; what type of pH test are you using, and have you cross referenced it. Only reason I'm asking is because I've noticed that there is a definite drop in pH with these pellets. When I have a full reactor of pellets, my pH drops from above 8.1 to about 7.9. Some colour test kits are a little tricky to read with any kind of accuracy. I like the pH monitors, but they can be deviant due to calibration accuracies. Perhaps it would be best to cross-reference certain tests (pH is one for sure) with a second [test] opinion. Also, do you use carbon?
Sheldon
this is my report with the biopellets with only two months in use
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for the increase of the NO3 for the feeding of the azoox corals, I have changed partially the water only two times.
Colt, did you also start feeding your tank more? That seems strange.
Did you remove other filter media when you put the pellets online?
Maybe. Some people seem to have issues with alkalinity at higher levels when running with carbon dosing. I'd watch the corals carefully, in any case.
I think 440ppm calcium and alk at 9 are fine. I've been dosing vodka and vinegar for 2 yrs and nine months with alk(9.6 to10dkh) and calcium( 550ppmplus) higher than that maintained with kalk dosing 24/7 with good color and growth. NO3,0.2ppm-0.5ppm; PO4,<.05ppm.