Ran into some issues with pH swing and EC getting out of control. Dumped about a quarter of the red and replaced with plain pH'd water. The readings in the res are perfect now and she is bouncing back! Topped at the third node on day 18. On day 19 I changed out the reservoir with fresh water and nutrients. Between changes I let the roots recharge in 3 gallons of water with Bush Doctor Sledgehammer for about 45 minutes.