But, I ran into some trouble yesterday. I awoke to find the plants yellowing a bit in the middle of the new growth. So, I searched some common plant problems for seedlings and found out that my grow tent might be one one of the tents manufactured in China over the past year that emits chlorine due to the PVC in it. So I was actually suffocating them. I dont know if its the tent itself or just the splash tray, but I took the splash tray out and they are returning to their natural color. So, I might have adverted disaster there. What kind of vendor knowingly sells toxic products? I hate shady people like that.