It takes forever to tweak my running water to run at a specific temperature and it takes me about 45 seconds to draw a whole bucket of perfectly tempered water. For this reason it is vastly more economical for me both in time and water, to wash my film with a series of fills and dumps rather than running water. I'd be interested to hear some thoughts and information on this method of washing. How many changes equal a minute of running water? Are there any drawbacks?