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  1. #1

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    Would an aquarium air pump be sufficient to circulate water in a temp controlled bath

    I want to make my own temperature controlled bath to develop C41 film. I had a print processor in the classifieds but there was no takers so i want to remove the therm units from it and make a temperature controlled bath with them but my concern is how to circulate the water so the temp is even. Can i use a small aquarium air pump for this or would that just give me a lot of bubbles?

    Thanks
    Jim

  2. #2
    juan's Avatar
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    An air pump would give bubbles. You might consider a submersible aquarium pump - I used one for several years to circulate my wash water in a large tub.
    juan

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    Jim,

    My only thought is the temperature of the water bath. The brain is a bit fogged but C41 100f +- yes no?????

    Jan Pietrzak

  4. #4
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    I second Juan's idea with the submersible pump - air pumps only make bubbles, giving your darkroom/lab a bubbling (along with the hum of the pump itself) sound - I've tried this once but promtly removed it.

    good luck

  5. #5

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    Quote Originally Posted by Jan Pietrzak View Post
    Jim,

    My only thought is the temperature of the water bath. The brain is a bit fogged but C41 100f +- yes no?????

    Jan Pietrzak

    Yes it is. The therms from the processor go over 130F i believe.

  6. #6

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    Quote Originally Posted by juan View Post
    An air pump would give bubbles. You might consider a submersible aquarium pump - I used one for several years to circulate my wash water in a large tub.
    juan
    Juan... Thanks for the advice. I have a ceramic tile cutter with a pump in the pan that shoots water over the blade, maybe i wi;; use that until i buy one. I checked the web and they seem very cheap.

  7. #7
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    Quote Originally Posted by J Rollinger View Post
    Juan... Thanks for the advice. I have a ceramic tile cutter with a pump in the pan that shoots water over the blade, maybe i wi;; use that until i buy one. I checked the web and they seem very cheap.
    Jim - I've bought a couple of inexpensive submersible aquarium pumps from a local petshop, to circulate water in my negative and my print washer. Apart from the humming sounds, they do the job perfectly. And, they are easy to fit with tubing / hoses etc.
    S°ren

    "We are much more likely to act our way into a new way of thinking than think our way into a new way of acting." - R. Pascale

  8. #8

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    OK, don't laugh, but I used a kids toy submarine for a while. A plastic battery case with a small electric motor and a little propeller. It even had a rubber suction cup to stick it to the base of the bath. It worked perfectly ;-)
    Steve

  9. #9

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    LMAO!

  10. #10

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    Here is what i have to work with, I removed the lid and the roller unit. I wonder what circulated the water in the processor... the rollers? I would be happy if i can use it for one roll at a time since i rarely shoot color.





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