Very nice grow so far.
Go easy with the bud explosion.
I've found it to cause a change in the ph while mixing, and this leads to calcium def'c.
Explaining your yellow leaves.
I think yours are normal.
I have 3 on the go.
2 in dwc and 1 in coco.
The coco is about 36" tall.
1 in dwc is about 24" and the other is 40+"
like