Response to airbells sorted, but now streaking...

The single tank I refer to is a 2523. It is made only for rotary processing. If you have this tank, notice that when the lid is off and a reel with 4X5 film is inserted, the top edge of the film is not in the developer. Which is not so bad because you use it with the lid on. But what happens sometimes in perhaps marginal situations is that pouring the developer through the top takes too long. Pouring in 250ml is pretty quick, but to fill the 2523 tank takes 4 times as much developer and 4 times as long! This is why I say to use the larger tank, pre-filled with developer - then drop in the film. You get instant wetting of the film. If you try this with the single tank the top edge of the film is not wet until you cap the tank and then fill it a bit more. My comment is not that you can't do it, its that you might be having problems because of the technique used. Jobo suggests not using any of these tanks for hand inversion with 4X5 film. But I think using the larger tank and good technique you can get by with it. I know that when I'm too lazy to set up my processor and simply fill the single tank I will get poor results, so I don't do that anymore. If I use the double tank and the procedure I posted above manual results are fine and consistent.

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