Hi Ginger,
Its always good to hear from you. Sorry to hear Tony has a bit of redness. Its probably granulation tissue, its unlikely that its an infection so long after the surgery.
I have a photo album (on profile page) showing examples distinguishing between infection and granulation tissue.
Try trimming his tube so its shorter. and that will help it be less irritating. (presuming his is over 10 or so inches long) Make it maybe 8", just clip with scissors and then reattach the port.
Also. the prescription cream I use has been the best thing ever. I'll still see a little bit of red growth from time to time peeking out of the inside of the stoma, and just one application will usually get rid of it. The name is Kenalog, generic is Triamcinolone. And, I may have a blog entry that talks about it, can't remember... lots of blog entries on homemade tube food though.
I hope you all had a nice Christmas and new years, and that you're enjoying that grand-baby!