THC or Tetrahydrocannabinoid is a defense mechanism for the plant. It defends the plant against things like bugs, cold, heat etc. the more you use these things the higher the THC account. You can use thing like chisitin which is crushed pulverized crustacean shells. Metal halides though I would not recommend reptilian bulbs cause they are cheaper. I recommend a blue metal halide such as the hortilux. Dehumidifiers around 60% humidity. And an air conditioner. if you really want at the last 2-3 weeks of flower (which is when trichomes start increasing) I use ice cold water to feed or water the plants. Hope this helps
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