What type of heater is best for a hydroponic greenhouse setup in Berlin?
I'm currently managing a hydroponic greenhouse setup in Berlin, where the winters can get quite chilly. With my experience in indoor hydroponics, I've been exploring ways to apply efficient heating solutions to maintain the optimal temperature for my plants. I've tried using a small electric heater, but I'm concerned it may not be sufficient for the entire area, especially during the coldest months. Given that I have both leafy greens and some fruiting plants in my setup, what type of heater would work best for my specific conditions? I want to ensure that I provide a stable environment without excessive energy costs. Can anyone help with recommendations based on similar experiences?