I decided to post this because I do admit that Bullfrog has had a problem with the water behind the jetpack in the past.
Did my 3 month (2month ,3 week) water change on Saturday, trying to time the next one for the middle of December before it gets to cold. I am happy to say that there was no build up behind the jet packs other then what you would see at the water line or in the filter compartment. Took only 5 mins to wipe down all the hoses behind all the seats with tub clean and left them in the sun to dry. Well I am not saying the problem is solved, I will say that with proper chems and water balance it doesn't appear to be an issue.
This comes as a bit of a relief