Just acquired a JOBO CPA2 and have some questions.
1. Since my darkroom's ambient temperature is a constant 68 degrees from June till the end of September (I am very lucky) I don't really need to use the water bath. I assume that I can run the JOBO without water in it as long as I don't turn the pump on (intern activation of the temp control).
2. On the other hand, I can easily keep the water bath filled. But how long till I might have problems with whatever type/kind of growth in its 68 degree water? Or is this something I should just not worry about and maybe change the water every month? Would adding a drop or so of bleach or chlorine prevent any type of growth in the water? BUT would that drop or so of bleach or chlorine harm the JOBO in any way?
3. Can (any) 120 stainless steel reels (I think mine are Kinderman brand) be used in any of the JOBO tanks to process 120 film? From my JOBO literature it seems that for processing 3 rolls of 120 film I would be using 1520 and 1530 tanks together. The JOBO literature mentions using a "special center core" with their JOBO stainless steel reels. What is this "special center core''?
4. Last off... Can anyone recommend a good digital readout thermometer to use with the JOBO?
thanks in advance
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