Brs dual reactor....gfo not tumbling

[Coralgurl]

I added my reactor in late April, noticed a huge improvement in algae, cleaning glass every 3 days. I cleaned the glass yesterday, got home from work today, needed to do it again. I noticed my gfo isn't tumbling, adjust the valve and it barely moved. I also noticed the connections don't seem sealed or tight going into the reactor, and there's lots of leaking. I don't think it makes sense to put plumbing tape on the connections as its probably easier to disconnect the hoses to remove the reactor. Any suggestions?