hey man I would advise you to get rid of those 4 literally retarded plants, thats gotta be genes man , I was very frustrated by how slow my plants r growing and how thin compared to other growers, but at day 25 they look like hulks when compared to urs.
in other words they are not worth the effort and attention youve given them so far (let alone time, including running cost) also if thats how long it took them to get here imagine how long it should take to reach maturity and then flowering
gd luck