I've just started using Panthermic 777, from Bluegrass "packaging," and have a question about the optimal starting volume for use with replenishment. They sent me four packets, each with enough chems to make one gallon. I've mixed one, and am using another for replenishment. My question is if one gallon of total solution is a desirable quantity for long term replenishment? My main reason for concern is the article on unblinkingeye.com that states to use a larger than needed volume for processing to achieve consistent development with 777, and that leeds me to wonder if there are benefits to a larger overall volume of stock? Oh and this is my first posting on apug. Hi!