I bought a reasonably cheap Reverse osmosis filter from purityfilters on ebay - it only makes about 5litres per hour without a supplementary pump, but it has got rid of all the problems i was having from the chalky water - chemicals never get precipitates anymore, my homemix catechol devs dont show any probs anymore, and most importantly, negs are water mark free in both ilfosol and mirasol. I think it cost me ?80 and took 1o mins to plumb in.
Squeegee film? arggh - never! And to think that when I started all this malarky up, I used to dry film off with toilet tissue and wonder why I spent so much time spotting prints!