Platycerium Groth habits

I would like to show people how fast some of these fern can grow, using a coronarium.

The first picture this plant is about 4 years. The plant is about 6 inches tall.

In the 2nd picture it is now 5 years old the plant is about 12 inches tall. The fertile frond about 5 inches.

Now this fern is 5.8 years old. The plant is about 26 inches total. In 8 months it grew 8 inches.

This is a Grande in the first piture the plant is about 5 years old and 8 months later.