What's wrong with my plants? Please help!!

Three of my seedlings seem to be getting sick. The leaves are yellowing, and browning in some places. They feel dry to the touch.

One of them has new growth that looks healthy, and the sick leaves are all at the bottom of the plant. Should I trim the dying ones off?

I think I may have overwatered her a bit too. (it's my first grow.) other than thatI have no idea what I could be doing wrong. They're all under 4 6500k CFLs.

Please help! What does it look like I'm doing wrong?

Should be easy for you, big ridges and twisting on leaf could be pH or heat, bottom leaves could be overwatering or cal/mag. Pots look smallish, have you fertilized? What is the water ppm round your area? You already mentioned overwatering. Leave the leaves to die of themselves. Peace

Um forgot, please leave details of the grow. Soil, water, ferts, fans/ventilation, temps, pH etc etc. Thanks

Of course! I'm growing in promix HP with 1/4 worm castings and 1/4 perlite.
PH is around 7.0 but I'm currently trying to bring that number down to around 6.7.

I just gave the biggest one her first feeding today, since her baby leaves fell off. Technaflora recipe for success at 1/4 strength. Temperature is around 75-78. I have an oscillating fan blowing on them constantly. I try to water when the pots feel light but that seems to be every day, honestly. Should I be transplanting into bigger pots??

Thank you so much for your help, let me know if you need any more information!

yes ... I would go for bigger pots about now . They dont look too bad at this point . I would skip a day a day of watering and just hold the course . sounds like your on the right track and I love how tight the growth is on them . Probally something minor ... newgrowth looks great tbh .. I'd just transplant into bigger pots and watch em closely ... but I would guess from the newgrowth that whatever it was didnt last very long . Good luck on the grow and of course if it doesnt improve or gets worse get back to us.....

Thanks so so much. I have 3 gallon pots, should those suffice?

Bump! Does everyone agree with what's been said?
What should I be doing different?

Replanted the biggest one, she seems to be doing better.

ya 3 gallon pots are what i use throughout my grow. i only transplant 1 time, and its from dixie cup to the 3 gallon. people say dont do that, but works great for me, and i agree with kingrow. looks more like a ph issue considering the slight burn on the lower leaves.

I tested the PH and it's around 6.6, thats fine right?? Im hoping she'll do good now that Ive managed to lower it down from 7+... Thank you!

Ph is too high you want to aim to get it around 6.2

Really? I always heard it should be around 6.5-6.9 for soil...

You seem to have the hang of it, plants look good now but not perfect. I think you are getting the basics down now just fine tune that and work with the ferts when the plant needs it. Looks as good as any of my plants at that stage, look into cal/mag as quite often a problem at this stage and water is important, are you in a soft water area or hard water area etc etc, have you got an ec meter and what pH meter do you use. I would say 6.6 to 6.8 would be the ideal soil growing pH so stick with what you got, remember to read the runoff reguarly to catch any pH fluctuations in the future. Promix and worm castings? Dose this soil sound a little hot for seedlings? Maybe it was burning your plant a little.

Yes that plant pot dose look a bit big but just water the plant roots not the whole pot till the roots start to establish in the pot.

Either way you have repotted and got pH right so now just let it grow, well done for getting it spot on, nice looking plant. Peace

over watered. ph was fine. nuff said.

no your ph is fine for soil...hydro you want between 5.8 and 6.2 soil between 6.2 and 7

yea dont exited .. your doing great ... 6.5 is fine for soil . They should do good for ya now . five galloners should take you all the way through . Hope you get some good dank : )