Quote Originally Posted by Bob-D659 View Post
If you are doing C41, the dev mixing with an acidic stop or the bleach generated a LOT of CO2 gas, more than enough to pop a sealed lid off a tank.
I use Paterson tanks and actually twirl agitate the bleach and fix steps with the tank sitting in a tempered water bath (in a small Playmate cooler). This has been working well for me.