I started biopellets in my 200g BB about 6 weeks ago on 08/07. I dosed 40ml MB7 daily for 4 weeks, then dropped to 20ml for weeks 5-6. I dosed 12ml Nopox (3ml, 4x daily) during this timeframe. The MB7 and Nopox were intended to kickstart the biopellets.
I had little drops in N starting from week 4 to week 6, and the past couple of days the biopellets really started to kick in, so I stopped the MB7, and dropped the Nopox to 9ml today (hoping to get off of Nopox entirely soon). I'm looking for a soft landing with my N around 10.
Like you, I was hoping my P would begin to normalize with my N, but so far that has not happened, and probably won't as per Randy's comments. My N was 62 before starting, and my P was off the scale (blinking 200) on my Hanna Phosphorus checker. The last week of N readings are below, and the P is still off the scale, i.e. not budging. I'm wondering if I need to start GFO alongside the biopellets, or if I should take a wait and see approach.
[/QI have the same numbers with my bio pellet reactor. 75g I just add 1 cup of bio pellets in the reactor. I get a little scared on bottoming the nutrs out tho .I have been running a bio pellet reactor for a year and a half now. My phosphates remain around 0.03 ppm and my nitrates are typically at 3 ppm. The only downside I have experienced with my bio pellet setup is my skimmer gets filled with bio pellet pudding. I have a 150-gallon tank and I run 2 cups of bio pellets in my octopus reactor. I made a DIY macro algae refugium using the Kessel tuna 80 light. I should receive my cheato tomorrow. I will let you know how it works out once I am up and running. The bio pellet reactor was removed in place of my new refugium.