The formula

This is supposed to be my first real grow. I knew I didn’t have the formula exactly right but this little guy is not looking good. The cotyledon are shrinking browning, yellowing and curling. The bottom of the plant is nice and turgid, but the top of the plant feels gummy. Temperatures mostly the same around 75 doesn’t really change. Humidity goes back-and-forth between 60 and 40. Trying not to move the plant that much. I’m feeding it purified water a little less than a quarter of the pot size which is 1 gallon. I had a humidity dome which was basically plastic wrap on top of the bigger black pot but it’s week to now so I figured I drop the humidity a little bit and humidity staying around 40-50%. Light is on level two. Don’t have a CO2 sensor and I haven’t tested the soil nor do I have a ppm meter. No intake or exhaust fans yet coming soon. Man, I really wanted this to work.