Pineapple Express - Low Pressure Aero

PE 1 and PE 2 have been developing well. I needed to place the rock-wool cube with PE 3 in a warmer place to get it to sprout, but sprout it did. It’s a week behind the others, but hopefully that won’t affect the grow overly much. I’ve increased the nutrients to about 550 ppm and they seem to be responding well, with a good amount of root growth. Added a humidifier, but had to plug it into the timer for the lights. If it was on 24 hrs the Rh got up to the 90’s, and the humidifier I have does not have accurate controls. I’ve been fighting the Ph rising all week. Every day I have to add Ph down. My research has found that sometimes the hydroton clay pebbles can have that effect, and that it should stabilize in the coming week or two.