The lab at my school uses those hoses that connect to the bottom of a dedicated washing cylinder for film; the cylinders are advertised to completely change the water 3-4 times a minute; we run them for five minutes. Maybe this is a sophomoric assumption, but I figured that as long as there are 15-20 total changes of water, I'd be good. What I currently do, then, when using a inversion tank to develop film is:

I empty the tank of fixer

I fill the tank up completely with water once and dump it

I fill the tank up with water to just barely cover the developing reels and dump it

I repeat the "fill to the reels" step 15 times

I repeat the "fill to the reels" step twice more with distilled water

I remove the film from the reels and hang to dry

Does this method sound plausible? I've read through this thread and, while there's lots of interesting discussions of chemistry, I couldn't apply it to my method. I figure (guess) that this method should be at least as effective as the Illford method.