Hi I just picked up my first phosban 150 reactor and maxijet 400 pump to go with it. It seems i'm not getting the proper flow cause the top portition of the media does not create the boiling affect thats supposed to happen even with the valve fully open. I've noticed that some of the media seems to making its way through the sponge so not sure if maybe thats causing the sponge to get clogged preventing flow.