Ohh no.. after n days..

The seedlings growth have officially came to an halt. They do not look like pak choi to me in anyway, more like tau gey perhaps. But ZZ say it might be due to the high concentration of the nutrient solution where the plants are not able to take up the nutrient. Quite true, the water have evaporated really fast because of the hot weather. I have added more water to it, hope it helps. We shall see..