What is this

the clones have been in solo cups for the past 5 days and I'm having a bit of a problem... frying of the tips on some plants and a weird pattern on some of the leafs? I fed them once at about 325 ppm? Plants are under a t5 @ about 5" above the girls

325 is low they could be starving except if there is something bad in the soil like salts. flush with good level ferts i would say no less than 700ppm

They look over watered. The clue is the tan perlite. It should be bright white. And it would help to know what mix they are in and what you fed them.

looks like a little mag def. caused by overwatering. don't feed them more, let them dry out a little and the next time you feed them give them a half strength dose of cal-mag at 6.2ph, then don't water so often

I've been feeding AN Conneisour with a very small amount of supper thrive once with a watering. I cut the promix with perlite. The cups today feel really light like they need water... should I give it more time?

don't let them go till they start to droop, just make sure at least the top 2-3 inches are good and dry, and let it get that way again before you give it more

enuf of the nutes

they need more space

potup with quality soils and perlite for drainage

is what they need

good luck

Thanks for all the replies guys, this little issue is messing with my timing. I wanted to move them under a bigger light next week I don't know if that's going to happen just yet...