The leaf twisting and contorting i'm seeing i...

Hi @EelGrows! I see the twisting/curling leaves you're talking about, and I also see you're already having some purple stems. What's your night temp? Are you applying a wet/dry cycle with quick rotations? In this situation I would buffer the pH to the optimal pH range for soil (~6.0-6.5 with most of the feedings at 6.2), try to raise the temperatures a bit (by 2-3 degrees at least), and try to stick to a wet/dry cycle, I.E. one day wet with nutrients, one day dry, one day wet with plain pH'd water, etc... I would also consider improving the airflow, my guess is that you currently don't have a nice & smooth continuous breeze onto your babies, so try to put a small rotating fan slightly blowing onto the canopy. If things don't get better after a few days, come back in here with more details&pics so we can help you out to refine the diagnosis and review your parameters. Hope this will help, keep us up-to-date and happy growing 👊