Aeroponics 2.0 setup Green Crack - (HPA)

Another good week, just puttering away on grow. Did some high stress training on plant to space out a bit better. Added 2 more buckets and moved 2 plants from the incubator tent. See the video for details. PPM: 400-500 in res; the drain side is only spiking 50-100ppm. Looking fairly good. Trying to keep VPD bit more in range on this grow; closely controlling temp and humidity. Issues: 1. humidifier died in spectacular dump of 4 gallons of water on the floor; made a custom system. 2. The drain line vacuum locks; going need a air-pump or vent line to break the vac. 3. The different plant sizes require different feed ppm and cycles on timer. The larger plant likes 5 seconds on / 5 mins off. Vid series over here on grow: https://www.youtube.com/watch?v=9C9piZD0Qs8&list=PLNiOfaE13UMnEon7e5ytiQTRkqMeSn2YH