Day 66...here's the latest update... this picture was taken just a moment ago, before lights out.
I decided that she was ready, and I started the flush tonight... I completely drained the reservoir, and added 5 gallons of water, and then drained that.
Then I added 50 milliliters of Final Phase to 8 gallons of water.
then I set the pH to 5.8.
the EC was .4
the EC of the nutrient solution was 3.2 before I flushed.