Seems like leaving soil alone has been good enough. Added nutrient at first weeks turned leaf a bit yellow. Flushed. Last couple weeks of adding just a touch of Tiger Bloom yellowed a few leaf again. Flushed today w/some distilled water. Ph been reading around 7 using the stick-in green meters. How accurate is questionable although reads light and moisture seemingly accurate. Still think the extra Exhale bag of CO2 air has made plants grow like the outside w/plenty of fresh air. Closet has cooled w/fall temp so run cooler averaging 80 or so with nights dropping 60s. Room kept around 50% humidity w/2 cheap humidifiers.