Hi, I use 50% perlite and 50% organic soil to grow my auto flowering Vertigo. Its growth is a bit slow in comparison to its hydroponic twin sister but otherwise healthy. The challenge emerged after I transplant it into a bigger pot where same 50% perlite and 50% organic soil is used (and pure sands on top to reduce surface moisture). The lighting condition has not yet changed either. The only damage to the plant was minor when the bottom of root ball fell apart during the transplant. About one eighth or less of the root system was damaged (if damaged at all). I have noticed the plant slowed down its growth in the first two days and then it stopped the growth all together (or at a hyper slow pace). Now one week has passed, it hasn't recovered. The early leaves started to turn lighter green so I suspect a nitrogen or other type of nutrient deficiency. I ruled out root rot after I carefully dug out some soil around the stem and checked the root system. It seems very healthy, some small new roots even grew out. I then added some organic bone meal to the top of the soil before I watered it this morning. Unfortunately though, so far I haven't seen any sign of recovery of this plant (14 hours later). What are the possible reason for the growth to slow down and stopped completely?