Bubbles coming from hang on back refugium??

[ILOVEYOUHALFISH]

I recently installed this Fijicube hang on back refugium to my tank and it is creating a lot of bubbles in my tank.

I added a small piece of plastic and scrubber pad to the filter it, it helps a little bit but there is still bubbles…

Has anybody had any experience with this? How can I reduce the amount of bubbles coming from the return?

 

[Gumbies R Us]

I recently installed this Fijicube hang on back refugium to my tank and it is creating a lot of bubbles in my tank.

I added a small piece of plastic and scrubber pad to the filter it, it helps a little bit but there is still bubbles…

Has anybody had any experience with this? How can I reduce the amount of bubbles coming from the return?

Try posting the videos as youtube links! They are not showing up on my end