I will need to disappoint you , there is no cure for them , the best way is to pray 
From the pesticides on the market you should use with different mode of action :
- on contact , horticultural soaps and oils like Plant Therapy or Safer Insect Killing Soap, NukeEm
-growth regulators , Azadirachtin neem oil like Azaguard
-bioinsecticides , different type of bacterias that poison the digestive system of mites like Grandevo - or beneficial insect combined with pesticides that will cause low harm to them
The best thing that you can do it is to uncover the Greenhouse if that works for you ! The morning dew will keep the leaves wet every morning , the spider mites dont like moisture , when you are in late flowering cover it again ! Like this they have perfect dry conditions and plant food .