Ed:(posted 8130 days ago)Cold the UFOs be air bells?
In additio to all the other problems with processing TP, it has amysterieous affinity for air bubbles to stick on teh film on first immersion.
Try knocking the tank hard on a wood surfce 10 time as soon as the dev is poured in.
I had the dev mark problem until I immersed the reel into the developer with one quick move, put the lid on then tapped it. I finally gave up on TP and use XP2 and Ilford Pan F. Although not as fine as TP, for all pratical purposes, they fill the bill for me and no hassle with the anxiety of spoiled shots.
Cheers