Hot Tub Bubble Diffuser

The main jet on our hot tub (Evolution 7) has had issues on it's filter cycles and the size of bubble its been producing. Instead of a fine stream of bubbles it's been sending out huge ones slowly which has become very loud and annoying.

I created this insert to create smaller bubbles which makes it a lot quieter on it's filter cycles.

Will post pics of it in place the. next time I drain it.