Heating the nutrient solution of a NFT hydroponic system may sound like a lucrative option for early yields.  Tampering with the nutrient solution temperature is expensive and return on investment low.  It is as if the protected environment provides growers endless possibilities to manipulate the growth season of their crops. Unfortunately nature does not work [...]

Greenhouse heating can be very expensive, especially if you greenhouse is not optimally set up for heating.  There are factors that can be taken into account in order to reduce greenhouse heating cost or capital installation cost. (A lot more info is in The Polytunnel Book) Reduce air leakages It is estimated that 10-30% of heat in [...]