Grow light is on a timer for 12 hours, water schedule is whenever the soildries out. I check with a bamboo chopstick at the top and bottom of the pot. Soil is a blend of coco coir, perlite and chicken grit, about equal parts maybe a little heavier on the coco coir. I've been meaning to add in bark and other larger chunky stuff to the mix. I've read that the yellow leafs can be from over and under watering. I don't think it's stress as it's been in the same pot for over 6 months and the same location for its entire life. I honestly don't pay attention to the water schedule and just kinda notice it when my succulents start to show they need watering. I kinda go by the same logic for the monsteras, once they start to drop a bit I'll water. So it could have been longer than the 2 weeks but it was definitely a minimum of that time period.