Blichmann HopBlocker and/or Electric Brewery Hop Stopper (original version) free to a good (or bad) home. I've had both for 7+ years with only a few uses. I find whirpooling works better. Saw the HopBlocker last week and couldn't remember why I didn't use. Tried it with a PA and whirpool packed hop pellets into the side and clogged it. I have no use for either, pay shipping and I'll send you one or both if you think you can use.