Leaves curling

I forgot to say, if you do poke holes, poke them about an inch and a half apart all the way around the entire edge of the pot.

Wait until the top inch or two are dry before watering again, this is easily judged by sticking your finger in the substrate. This routine is a good guide as to when to re-water and I am sure if you follow this "rule", your plants will be fine. Right now, do not give any more water/nutrients until the soil dries out, as suggested above. With 75% humidity your plants will have a hard time transpiring and therefore with the extra moist soil, she is now suffering with over wet roots. You can do nothing and just wait until they recover, which will do no real harm, but if you are really concerned or feel compelled to "do something", then poking some holes in the pots with a bamboo skewer or similar will aerate the soil a bit and help the soil dry out a bit faster. The best places to poke the holes is right at the edge of the pot, just slide the skewer down between the plastic edge of the pot and the soil. This may seem to potentially damage the roots, which it may do, but your plant won't really notice and will recover perfectly from this "intervention". So, it is up to you, leave it alone and wait 2-3 days or poke holes and wait 2-3 days as well. Either way, as long as you don't water again for a while, (until the top 1-2 inches have dried out), your plant will recover and be growing healthily soon enough. Hope this helps, Organoman.

looks like wind stress to me. you want your fans blowing above and below the canopy. direct fan causes the leaves too curl in attempt to keep moisture in. At this stage she is so small you would only need the fan above. Other thing it could be is under watering, but that would show more uniform across the whole plant and not just the top leaves Happy growing

Right now I am watering 1L every 3 days. Using Gaia green living soil. Gaia bloom, little bit of fish shit and a small amount of liquid weight. My soil isn't drying out very fast

Don't think it's to much to worry about. Possibly heat stress or wind stress if you have the fan to close. If you notice more problems in a few days re post and we will have another look through your diary to see if its from overwatering or from nutrients.

Can be a huge array of things to name a few underwatering,root problems, overfeed, overwatering, Temperture changes it doesent look like a very serious problem im sure you will be fine :) could be your medium is not the best or that if a fan has been blowing on it constatly it could be wind damage though likely to be a simple imbalance in nutrients will most likely sort itsself out in time :)