Trouble shooting my processing

I haven't processed film since I took the class a few years ago and need help with my process. I processed two rolls of 35mm tmax and 1 roll 120 tmax last night and almost all the negatives have significant purple clouding on them. Is this caused by spent developer or my fixing time or something else? Secondly, I've never processed med. format film before but assume it is like the 35mm. I did a water prewash last night and the water I poured off of it was blue. Is this normal or is this some other problem I need to be aware of?

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