Sour Diesel

That plant is looking a bit sad and showing signs of some Root Drowning to me and maybe heat stress. Its hard to fully tell as the diary has no other information but pictures. If I had to guess they are drowning and need more oxygen at the roots and a maybe cooler environment, but maybe not. It would be nice to know what your feeding them and how much EC/PPM, room and solutions temps, how close your led is what kinda of oxygenation system your using. I suspect there maybe some overfeeding but hard to tell in the photos as they are blue/purple. one things for sure in week2, the leaves on that plant where from lack of oxygen, an overwatering issue. A lot of good hydro growers will say if your having any issues check your roots first. Are there any strange smells, colours or films. Best Of Luck!

@balumanagadze It will survive mate just keep the cat away in future 😁