What will be temperature of greenhouse for growing hydroponic tomatoes?
The best results will be achieved by maintaining temperatures no lower than the low 60s (F) at night, and no higher than mid-80s (F) during the day.
It's possible to grow tomatoes in greenhouses with temperatures that fall outside of those ranges. But productivity and fruit quality will suffer.
So if you're growing tomatoes just for your own use, it's not quite as critical to maintain the ideal temperature ranges. But if you're growing them for commercial purposes, your chances of growing a profitable crop will be considerably enhanced by providing a greenhouse environment with optimal temperatures.