DWC Auto Northern Lights

The ppm issue is getting worse, so I have been adding a significant amount of pH'ed water to try and sort this. Due to the excessive drinking and ppm increases, 2 of the plants sharing the reservoir are getting pretty heavy N Tox - they are further on than this lady, so are not needing as much N during flower. Did a full reservoir change/clean and let them run for a few hours with ONLY PH'ed water. Nutrient levels have been changed to try and cope with this - at least I can drop the MagnifiCal now as the plant that needed it is now into flower and should be fine. pre-flowers are building nicely and still some stretch to go. Currently 25" tall and 27"x 27" footprint