RQS NL auto led grow

Hello, If you're on a budget check the manufacturer's recommendations if they have one...and then if not id say around 18-24 for this age. But watch for any stretch and then lower or stress and raise the light. Also doing the heat test where you put your hand above the plant and see if you're getting too much heat and if so raise the light. Good luck. Happy growing. ✌️

Might be hungry fucker....might require bit more flower nutes or calmag as they love calmag autos and as its only 4 hrs a day and looks really gd health wise you'll be fine just a tweak on your feeding regime most likely.....leaves droop from being hungry so must be linked