I'm a total darkroom hacker [or is that hack...] but living in the middle of the desert as I do, our tap water comes out of the faucet at about 80*f in the summer. Before I started cooling off the chem.s I would follow the extrapolated dev. times for that temp, and I always got VERY contrasty neg.s. I have always thought that it was due to the high temp. Maybe you could try your chem.s at +100*f or so and see what happens.(posted 8781 days ago)Probably not the answer, just some empirical evidence to chew on.