So I bought an Imagitarium air pump and it came with airline tubing. I've been using it for a week or two. I was doing my wc on Saturday and noticed it felt really slimy. Then I noticed it was because it was like sloughing off an outer layer of slimy plastic. The instructions didn't say anything about pre-soaking it and I've never had to do that with my other airline tubing - is that a thing people do? I guess I'm going to try it. Now my fish are flashing. Can't be totally sure it's related, but my water parameters are excellent and plastic particles are probably not ideal for them. Also, this air pump is louder than the one I bought online for cheaper. Just throwing that in for anyone looking up this brand intending to buy.