Hydroponic water spinach is toxic because heavy metals exceed the standard. According to relevant data, the water quality of hydroponic water spinach is not up to standard, and the heavy metals exceed the standard, so hydroponic water spinach will be toxic. Contaminated hollow food is inedible and should be properly destroyed. In the process of hydroponics, you can buy the corresponding water quality test quantity, and then use safe water for hydroponics.