Tubing is fine
Replace it very often. I think its just a problem that could be a 100 different things. Everyone says hops, water, tubing, ball valves, chlorine...honestly its probably a combination of all of that. I can't pinpoint it. Its really frustrating because this could take 20 batches to fix...all of a sudden the beer hasn't been the same. Can't figure it out. My procedures and cleanliless is spot on.