help......
hydrophonic, 900 ppm never fall even been 4 days,
recently add 200 ml of water to 1 litre with 10 ml solution mix Aand B to replace water absorbed
plant it self 2 weeks old, fell of twice, the stem looks like broken, then i buried deeper
I grow DWC. For the first couple of weeks of new growth, my nutrient solution is around 500 ppm and I use RO water. The only thing I add during this time is straight water. You can try to save it by changing your solution and lowering the nutrient ppm. I’d recommend starting over if possible with a fresh seed.
I would say probably better to start a new one. I'd recommend keeping the ppm around 250-400 for seedlings. 900 in my opinion is way to high for that stage your at.