I recently set up my fuel injected CO2 system, including the Mini Vortex Reactor.
My reactor keeps sucking up crap from the tank. I've tried moving it up, moving it down, by the intake, etc. but it still keeps sucking up crap.
I end up with a massive air bubble spinning around, making lots of noise in my reactor. I don't have a lot of decaying plant material in my substrate. So that's not the problem.