More plants can be obtained in a shorten time
The branch can extend from the observation port. Use black tape to seal when not in use. Prolonged ventilation will affect the rooting time.
Upgrade 4 automatic deduction holes can complete the work by one person.
The diameter of the water inlet is increased to facilitates watering.
The bottom can be adjusted reasonably according to the diameter of the branches.
The size: and the large size can put in 2-3 branches at the same time.