I want to start developing HP5(hp5) in trays. I plan on using Agfa Rodinal or equivalent. at iso 320-400 any suggested development times? and dilution? ie. 1:25 or 1:50 I am having trouble finding any acurate info on time. especially related to tray development. Also the times I have found are conflicting. thanks ps. I do not care about grain size. Only even development across shadows and highlights.