That's good to know about the keeping qualities of the solutions, Ed. I don't have tanks with floating lids, but I have some Kodak 5 liter bottles that I could use to mix up a full batch. I have Beseler XDL spray to protect the developer. 2 liter PET soda bottles are easy to come by.
So I take it you just keep your tank solutions going with replenishment, stored in 2 liter bottles in between printing sessions? You don't toss out your 2 liter tank solutions after some period of time and start over with a new one?
Thanks for enlarger head suggestion. I'll look for one.