Hi blades, I have a Chemdawg Auto that's 32 days old.. and it's been yellowing the bottom leaves edges, and there's clearly something wrong. The plant is in 3 gal smart pot of FoxFarms Ocean Forest, cut with 30% Perlite. I also have a 30 Days old PineApple Express growing alongside it, all the same living conditions. Both have never been *fed* anything, just plain water, Living off the Fox Farms. What seems to be the problem with the Chemdawg? The Pineapple Express looks fine... Here are some pics below, from Lights off today.
I suspect your water is it RO..bottles or outta the tap..? either way it may be knocking the ph some try a 50/50 mix of tap and ro add a pinch of calmag 1x per week good luck