Attaining Mastery (especially Level 5) can be really tough and requires a fair bit of work and patience in order to achieve. We definitely recommend that you focus on planting the strains you wish to master in your pot with the best lights and water pumps - the higher they are upgraded, the more buds you will receive. You'll also need to keep a very close eye on it, and ensure that you are watering it on time and swatting any spider mites that show up with efficiency.
There is always a certain level of chance with growing plants, so you might need to try a few times before you grow the best plant possible. Keep trying!
Overall, here are the most important factors in achieving Mastery:
- Max plant happiness
- Fully upgraded water
- Fully upgraded lights
- Great timing
- A little bit of luck
Good luck in becoming a master of your strains!