I am new to using ID-11. I followed the directions for making one gallon of stock solution--package says to make one gallon. When I read the development times, I see dilutions of 1+0, 1+1, and so on. Do I read this as (1) using the stock solution with no dilution, (2) 1 part stock solution and 1 part water, ... ? Thanks in advance.(posted 8181 days ago)David