Originally Posted by Nick Zentena
There are/were various 70mm backs for the ETR I've got a non-working third party one. I'm not sure what's wrong with it. The SQ likely had similar third party backs.
Developing? I've got X-ray reels. Cheap plastic reels. Too big for any know light proof tank. Plus I've got a couple reels intended for 116. The Xray reels are better.
The rare 5' Jobo reel is hard to find often expensive and only takes 5'. But fits a Jobo 2500 tank.
Hewes makes 70mm reels. Not cheap.
Jobo 2517-70mm(1.5m or 220 lenght) can also be used in Testdrum(made for testprints 10x40cm). small amount of chemicals-500ml.