First True Leaf Curling?

First tent grow, but a veteran outdoors. What makes the first true Leaf Curl like this?

IlGM GSC Extreme and Topicana Cookies feminized, just starting veg stage. PAR is 410-425 across all 5 girls. Watering every 3rd day with RO at 6.5. 1/4 FF Trio every other watering. Temps 75-78, RH 44%-65% (struggling with the RH balance).

They look fine to me. Do be careful of overwatering or underwatering, once every three days in those little pots may not be enough. I am seeing some algae growth maybe, which would suggest a little overwatered? Not a big deal. Plants looks fine, but you may be seeing a little “warping” from over or underwatering. Or it maybe perfectly normal cause they look fine. Rather than water on a specific schedule, simply water when the pot feels light and they need it. Different stages have different needs.

Thanks DeadheadX. The algea does concern me a little. I may have over watered, but it could be from the couple days the humidifier malfunctioned. I woke up one day and it was spouting steam full blast with RH in the low 80s. AC Infinity sent me a new one and it's been fine.

I'm going to transplant to 7-gal fabric pots today (roots are coming out the bottom). I'll use a moisture meter for the first couple weeks.

definitely humidity/light intensity related but also not really anything to worry about. Young leaves are super thin and sensitive.

Cover the algae with another thin layer of soil and it will cease.

As far as transplanting, especially if youre going straight to a 7 gallon from these tiny things, i personally would think theyd be fine for a bit longer and are in no danger of becoming rootbound yet.

madvillian420 said:

As far as transplanting, especially if youre going straight to a 7 gallon from these tiny things, i personally would think theyd be fine for a bit longer and are in no danger of becoming rootbound yet.

Click to expand...

Thanks, I will heed this advice and wait five more days to transplant. I have a couple roots popping out the bottom, but just one or two from each pot.

Ignore it - early single leaf set - they are expendable and plant will use them up. They are Transplant ready.

Budzbuddha said:

Ignore it - early single leaf set - they are expendable and plant will use them up. They are Transplant ready.

Click to expand...

OK then, I'll split the difference and transplant in three days