Skunk #1's in my desk

I got 2 of my plants transplanted, the other one wasn't looking good so i held off on transplantin.

I got strips and the ph of my water was way off and i think thats the reason they started looking like shit. So i went and bought them some nice water and slowly they are pickin up. Still not very tall and only with 4 leaves....thats kinda dissapointing its been 2 1/2 weeks and they are only 2in tall

any thoughts on how i could makeum a bit bigger i need to put them into flowerin this week prolly as i need them to be done end of mayish.