Anyone running BioPellets without a skimmer? Looking for feedback.

[kaboom]

I am curious if anyone has experience running bio pellet reactor on a system that doesn't have a skimmer, wondering how much bacteria outbreak there would be over a long period of time and if that would balance out in time?

I plan on adding a small bio pellet reactor (3"x14") to a 75g skimmerless tank but would like to hear any experiences first. I've done large reactor in a large tank with skimmer before and the result was fantastic. Just looking a different approach on the current system.