I had a simple question about water when mixing your own chems. Do you need to use distilled/reverse osmosis water when mixing any and all chems? It seems to me that you do, since pH can vary widely from one city to another and you're dealing with acids & bases here. The directions for the chems don't mention anything specific. Other rants below, optional reading: Anyway, about me if you want to read on and comment. ~20 years ago I had photo I & II, so I know my way around a darkroom. Basically I haven't done any darkroom work since then. Despite the convenience of digital, I prefer to shoot film. Don't know why, but I've decided that forking over ~$10 -12 for 12 exposures on 120 film is excessive so I'm developing my own film and scanning it. I have a changing bag, but I've taken a 1/2 bath and plugged up all the light to have a place to load/unload my film. Since I'm starting again, I'm keeping it simple. Here's what I'm using: Ilford DD-X Ilford Ifostop Ilford Rapid Fixer Ilford Ilfotol Paterson System4 3 reel tank (2 rolls of 120/220) My bathroom kinda stays around 68 so I don't need too much in the way of temp control (I think). Last time I had to bring the temp up for the developer so I rinsed a silverware knife under warm water and stirred the developer in the graduated tube until 68F. I like the Paterson since it's plastic and there's little chance of that problem I sometimes have with the metal reels (film touching) and I *hope* the plastic means there's little temp variation. So far I haven't used a tempering bath. I've only developed 3 rolls of 120 so far and seem to have good results. Thanks!