home made bio pellet reactor. I didn’t feel like spending $200 so I made one. bio pellets, like sugar dosing or vodka dosing your water, will feed the bacteria, increasing their numbers, which remove nitrates in your tank. nitrates need to be removed via protein skimmer or scheduled water changes. I was dosing sugar in my tank and have decided to try bio pellets. It took me an hour to build once I had all the parts. Detailed video coming soon. clear 3″ pvc pipe with 1/4″ pvc connections and tubing. nice tumble with rio+ 800 pump. use 1 cup bio pellets for every 50 gallons. Don’t forget to subscribe. New shows every weekend!