So I've been lurking rather exclusively in the grow section in the past few months and finally decided to give it a whirl. I was using a 5 gal bucket with Fox Farm Ocean Forest as a base. The bagseed in each attempt I used was of decent quality and would consistently grow healthy for the first 4 days after breaching the soil. The problem: The plants always die within Day 4-10. I water them with H20 only because I know that the nutes in the soil will suffice for about 2 weeks. Initially the bottom most leaves begin to yellow and then brown and this would travel up the plant. I assumed this was heat stress or due to me frying the leaves. My pH is always within 5.9-6.4. I changed how I watered by modding a water bottle with a straw so I would not wet the leaves. I was using the 24/0 lighting schedule with 2 23W CFL 5500k bulbs. The temperature inside was always a cool 78. Do you have any idea what the hell I'm doing wrong?