Yes the slowest ones are the youngest. 2 weeks difference. But now the PH is stabilized and every thing should be OK. I look for the male balls but for the moment no balls. Hope there won't. I don't know about the strains genetics but for the moment the best strain ( for the yield and quick growth ) i ever grew is skunk special from female seeds. That's why, after several tries, i'm going to purchase SS beans again.
Fhydro