Rowland Mowrey , Jan 13, 2006; 07:34 p.m.
"Air bubble stone"????? IDK about that one. Please explain...
As for freezing diluted processing solutions, it is quite reasonable as long as everything goes back into solution when thawed. It seems to me that the organic chemsitry would 'oil out' when frozen so you have to watch for that, and once formed, the oil will not redissolve easily, if at all.
This would be particularly true of color and B&W (first) developers.
All of the solutions could be frozen, but I wouldn't want to use glass containers, I would leave an air space at the top filled with nitrogen if possible, and I wouldn't want to spill or leak into the freezer. Beware of any chemical contamination and use air tight bottles to prevent spillage.
If there were any spillage or leaking in the freezer, I would consider it unsafe for storage of edible food, especially reversal bath and stabilzer, not to mention the developers.