Hey everyone. I cant believe i haven't done this before. I moved into a house about 8 years ago that had a pond. Being a new pond owner it proved challenging. It took a while but i pretty much got it under control after a while. This last year has been more challenging however. I feel my filter is not operating at its normal capability. Matter a fact i know it isn't. I have been away on travel and just returned after 5 months or so. i performed a backwash two weeks ago and it seemed like during the blower portion the beads were not sloshing around like normal. However after the backwash was complete the waterfall was flowing like normal. Yesterday i went to do another back wash and again the beads didn't sound normal during the blower portion. I open up the top and stuck my hand down in and everything was more of a solid. i spent a good amount of time breaking it all apart. I know it just ran way too long without a backwash. When i completed the backwash the water doesn't run like it should. Only about half the water that should be flowing is. Being the end of the day i let it run and today i tried again. I noticed today that after the backwash was complete and now that im back in filter, with water flowing, there is still water coming from the backwash outlet. I'm thinking maybe something as simple as a gasket. I opened up the control valve but really don't know what Im looking for. everything seems to be OK. any ideas?