I'm brand new and I have my darkroom all set up. I'm going to mix my chemicals for developing T Max 100. The chemicals I bought are all for making 1 gallon. Right now I have one of those half gallon brown storage bottles for the D-76 and a couple 2 liter soda bottles I was going to use for the Stop and Fix. I now realize that this could pose a problem trying to figure out exactly how much is half of a pack of powder intended for 1 gallon. Should I just sink the money into buying all 1 gallon brown containers or is there an easier way to do this? Thanks for the help!