Originally Posted by photolady 
Or mighty putty. J-B weld is little caustic for my tastes, plus it might not work well on plastic tanks. I've used Mighty Putty for a lot things.
Ratmagiclady, I have one tank for one roll at a time. Which can be a pain at times when I more than roll to develop. I've not messed with this stuff since leaving the northern country in 2004. I did do a bit of color developing but that takes more patience than I have now. So, I've decided to stick to B/W.
Well, I tend to end up with a bunch to do at once. The nice thing about spare reels is that they are *dry* if you want to do more than one tank in a row. Makes the reloading easier. I've just got at *least* a few more than I could possibly need.
What tank have you got?
If that Mighty Putty, speaking of its salesman , won't react with any of the chemistry or absorb it, that could be the thing.
If you do ever get a tall Paterson tank, or at least the one that holds two or three reels, I suggest wrapping some duct tape or something around the middle: great things, but when they made the taller ones, they didn't make the walls any stronger to account for the weight of the water: that's why they crack when you tap bubbles out a bit too hard.