Carbon Reactor

[htfn]

I'm wondering what everyone use reactor for your carbon. I am currently using TLF 150 for vertex rox 0.8 carbon. And I hate it. Everytime I replace my carbon air lift up black sponge inside of reactor and carbon will escape into the sump. Maybe I'm not doing right but I tried very slow flow for few hours to let air goes but still same issue. Do you have any better reactor or anyone point out what I'm doing wrong.
Thanks
Hiro