first time grow

I repotted one plant of unknown origin, but I’ve removed it from the tent because it’s totally different to the others, I think this is the seed I found in a bag of weed I’d bought locally but she wasn’t growing well and all her stems and stalks were like rhubarb, anyway the others are all at different heights and stages I think, the tallest being 40 inches and very spread out stems the next is 26 inch, then 19 and 14 inch!! I’m not sure what stage they are and I have noticed they are wilting slightly, I topped up the soil as the roots were showing, I’m only giving them 1ml floral gro per 1 litre water, I really don’t want them to fail now I’ve got this far!! It’s difficult keeping the lights even as the plants are different sizes, if anyone can have a look at the photos and let me know what stage you think they’re at I’d be grateful