Ah perfect, that's kind of what I was thinking I needed to do, thanks so much for the suggestion. I'm hoping with a few changes I can start to get things back on trackI would stop the MB7 and start dosing 2 ppm NeoNitro daily. Check nitrate concentration every day before dosing. It may only come up a little bit at a time, but if it is zero the day after dosing 2 ppm, raise it to a 3 ppm dose. Do the same thing the next day and continue increasing the dose by 1 ppm until you start seeing nitrate come up. Once you see it rising, you can stick with that dose and continue dosing it every day until you get to ~10 ppm nitrate in your tank. Then continue to monitor and keep it at 10 ppm. Hopefully without the MB7, and as the algae goes away you can eventually stop dosing, but I’ve found I still have to dose a small amount daily. I may add more livestock eventually so I can stop dosing completely.