Heat burn, wind burn, or over watering?

@O_GrowTom I gave them .5 liters of water per pot, they are in 1 gal (3.8 liter) pots, directly after getting them from the dispensary, they were in rockwool cubes. I haven't fed them again since day 1 and we are now on day 3. The soil feels a bit moist still about 1.5 inches down so I didn't feed them again today yet. The Elephant Purple clones which aren't showing this curling were pretty dry so I fed them again today. I think I will feed the Scoops (ones with the curling) less next time. @O_GrowTom I don't think it's nute burn as I'm being pretty light on the nutes, they only have cal-mag, silica blast, and liquid karma, all at low dosage (EC is 0.35). The ones with a lot of curling were pretty close to the fans, I have since moved them further away and raised the fan up so it's going over the top of them rather than across them. @4F1M6 My PH was 6.5 during the first feeding, these Scoops clones (with the curling) have only had 1 feeding. @4F1M6 I think you maybe right on the pesticide, even though SNS 203 is natural, I think it may have been too much for them, or maybe just wet leaves and being next to a fan. Either way, I think this is most likely the cause. I appreciate everyone input, I'll update again if it's still progressing after the changes from the suggestions.

We komen er nog, teamwork!👍

Es tu parti de bouture car tes plantes semblent encore un peu faible pour le moment pour un arrosage à haute dose de nutriments. J ai vu que tu arrosais 0.5 L par pot, je pense que tu devrais réduire à 0.25 L pour le moment et bien laisser sécher entre chaque phase comme ça tu te rendras vite compte si elles repartent. En combien de temps ton substrat sèche t il?

Je pencherai pour une brûlure nutritive, des bestioles t auraient pas abîmées tes plants aussi rapidement. Regarde si les plantes situées au plus près des ventilateurs sont plus touchées

My next suspected culprit would be large ph swings,? Wuts ur ph at? Had it been stable?

@Weezy90 I checked via microscope yesterday, didn't see anything. I checked again just now and I think the dots are just residue from being treated with SNS 203 (preventative measure). @4F1M6 The water temp is about 72F (22C). These are in a tent indoors so the ground temp shouldn't be an issue as there are many layers including the tent, a mat, and carpet between them and the floor. The lowest temps I've seen have been 71.8F (22.1C). There isn't a big difference between day and night temps right now because the light output is low.

Hoi! Ik denk dat ik beestjes zie, al die kleine witte puntjes, als je inzoomt. Aphides / Wollice misschien. Of is er iets mis met mijn ogen, ik denk te ver of het is gewoon stof 🤣 Kun je met een microscoop naar de bladeren kijken? Is het niks, negeer mijn reactie dan maar.

Too me it looks like stress in the root zone.what temp is the water ur filling ur pots with? I've seen these exact results from cold overnight temps on outdoor plants(roots getting too cold). Are the pots sitting on a cold floor? That would be colder when lights go out?