Getting sweeter, bigger harvests comes when you give your plants carbohydrates that jolt them with an energy boost.
This is an important fact to remember, that during peak bloom cycle your plants need for sugars exceeds their ability to manufacture sugars. The more you push them, the more C02 and nutrients you give them, the more they need carbos, the more they fall behind.
The resulting carbo deficit is the same thing that happens when athletes collapse near the end of grueling competition. And its why carboloading is a favorite tactic athletes use to keep going strong for victory, when others fall and fail.