Bio-pellet Reactors: whats good whats bad

[Mrfish55]

I made my own from an old Precision Marine calcium reactor, made it recirculating with adjustable output that is plumbed direct into my skimmer, works great. I think a lot of the horror stories re: pellets are a result of too many pellets or too much flow, I am only using 2 cups on the 300, initially took about 6 weeks before I started to notice a difference ( slow and steady wins this race anyway) but it has been online for just over a year and I am happy with the results.