It's All About The Nutrients... Following a good nutrient regime and keeping it simple will go a long way to ensure adequate uptake of all the essential nutrients. It is advisable not to use too many formulations, as it may be very difficult to trace the exact cause of the problem if there are many additives and supplements in the nutrient mix.

Certain commercial products have been
developed that can stimulate faster nutrient uptake and speed up
stem and leaf growth. Many of
these products are best left to the advanced and experienced
growers. Novice hydroponics enthusiasts should approach such
products like growth boosters with caution. There are also several
products available on the market that claim to work as bloom
fortifiers.
These formulations act to stimulate flowering and increase essential
oils in plants. While selecting a bloom fortifier, the best thing to
do is to select one with an NPK ratio of 0-50-30. Such fortifiers
have no nitrogen and are rich in Phosphorus and Potassium. These
essential minerals stimulate the formation of super blooms.