Stickanswered grow question 6 years ago Hi there! Congrats on your first grow, you're doing great! There are a few things you can optimize. 1) Your light distance looks huge on the last pictures, you may want to decrease this distance in order to maximize the light efficiency. The hand-test is quite universal, if your hand - positioned at the top of the canopy - don't feel too hot, then you're good, if your hand burns, then your light will also burn your plant. 2) I think you're trying to apply a continuous pH level of 6.2, but your soil will react better if you change this level a bit at each watering session, within the 6.0 - 6.5 range. 3) Slow down on nutrients! If the infos onto your diary are correct, you're overfeeding your plants with 13ml of fertilizer per liter. 4) Are you really giving 2gals of water everyday? That's way too much, your soil needs to be on a wet/dry cycle, having a permanently wet soil results in root rot, slow growth, nutrients lockout... 5) Is your white fan blowing straightly onto the canopy? I have the same fan and I found it too violent for direct exposure, I usually tilt it to the roof, so it can create a breeze into the grow room, but not directly onto the plants, this gave me wind-stress in the past, plant's don't need wind, they just need a cool and continuous breeze. Hope this helps, I'll be around, keep us up-to-date so we can help you adjusting your parameters, and happy growing!