Lots of trouble now with this filter, on the initial set up it took me a long time (first canister) after finally getting it going, about 3 weeks later I noticed and it still does this every now and again air shoots out from the output hose. I don't know where I would put these but I have 2 small O- rings I didn't use in the set up that could be contributing to the issue. I know it's dumb but I couldn't find where to attach them and still have them laying around. Another issue is the flow is drastically less then the start up, I noticed the hoses are extremely dirty (it's only been running 2 months) and I'm wondering if this is the normal time frame for this to be happening. Also how do i remove the hoses for cleaning- or how do I drain all the water form the motor head and hoses ?