My first grow in a box

Trying to keep the conditions steady. The seem to be growing faster, they really like the fertilizer. All 3 have 4 nodes, but the bottom true leaves seem to be dying. Might have been inappropriate ph earlier. Day 25: The plants started to smell, although it’s weak Day 28: The fifth node is developing nicely. I think I’ll top them soon, maybe except the little one. It doesn’t seem to be growing well so far.