I had just filled the res. prior to posting by maybe a few hours. I was noticing yellowing of the lower leaves ( N deficiency?) So I wanted to bump up from 1/4 strength to 1/2 strength. I logged everything. I did and what ppms and what ph. I can't grab the log now however it's in an area where the lights absolutely dont get turned on at this hour. As soon as I wake up and lights are on I will copy my log onto the forum as well as pictures maybe get some pointers and help. I know that I have my ppm at a little over 200 at 1/4 strength. I did get a user message me to go ahead and bump it up to half strength after they asked me some probing questions before they answered. Now that I am half strength I know my ppm was at a little over 420 and rebalanced ph to 5.5-5.6 one of those two can't remember off top exactly.