Hey i am having an insane amount of bubbles in my system which i think is quite good besides the bubbles. I have this res.

And i believe all the bubbles are created by the water bouncing off of the acrylic top and being suck back in before bubbles can dissipate. Since i have both in and out right next to each other like in the picture. I am using a via Aqua 1300 which also works great.
My idea is to put a piece of sponge into the side where water is hitting? i think this has been done before but it should reduce the water from bouncing off of the acrylic. My other problem is that the the res is on its side in my drive bays.
Any input if this had been done before would be helpful since i don't want to go getting a sponge stuck in my res.