I run 2 Two Lil Fishy 150s, I use one with phosband and one with bio pellets. I have a single mag 18 that is split 3 ways , one goes to my tank, the other two to the reactors. With the bio Pellets you want them to tumble but not get pushed all the way up. With Carbon or phoshate remover you barely want them moving, i have them both on ball valves off the pump and I use the ones provided as backup. I think there is also one from Bulk Reef Supply that is basically 2 of them in one
I have a 150 and a diy voss water bottle reactor. the 150 has a maxijet 1200, and after I started using that for chemi pure elite I switched to running 2 voss water bottle reactors off of maxi jet 900s