Ok, if they ARE already rooted, I would suspect either over/under- watering or heat exhaustion. Since you said you've only watered them once since planting, I'd say test the soil to see if it is too dry. They sell meters for that. If it IS too dry, WATER IT!

If this is not the case, the next culprit would be heat. You said you keep the heat down. How do you do this? From where are you measuring the heat? Thanks.

Edit: One more thing. You said you put fertilizer/nutes on it? 60%? Well, if they are not rooted, they most definitely do not need the ferts at this time and you could injure them by adding them. If they are rooted, I still think they are too young to be using that much fertilizer. You could start even lower, like 25% at first and work your way up from there. Hope this helps.



TGF