I have been using BTZS tubes for processing 4x5 film. The problem came this summer when the incoming water and ambient temperature of my darkroom reached near 75 degrees. The recommended capacity for straight D76 is two ounces per sheet. According to Kodak publications it still requires two ounces of stock solution in a 1:1 dilution. The BTZS tube caps only hold two ounces. If Kodak is correct then it looks like I will need something other than D76 or HC110 to lengthen the development times. Has anyone used diluted developers in these tubes? The other choice is to ice everything down but one I really don't want to do.
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