Hey bro! It's a bit hot for him, he's trying to lift the leaf tips up a bit!
He has a small phosphorus absorption issue - red stems on the leaves! This could be caused by high nitrogen content in the watering and low phosphorus content! Also, incorrect pH might have affected the phosphorus deficiency!
Solution recipe:
1. Set the acidity of your hydroponics to 6.2pH-6.3pH 👆
2. Add the following ratio of grow:bloom (1:1) to the watering or reservoir 👆
Good luck, buddy! ✊👋