Alternative to foam in refugium chamber

[AdamsB]

So I have the eshopps R - 200 sump/refugium. It came with a foam pad between the refugium and the return pump. It's excellent at reducing micro bubbles but with it there it will reduce the amount of pods returning to the DT. But without it the water tumbles over and creates bubbles which make their way to the DT. Apart from raising the water level in my return chamber of the sump does anybody have a suggestion to reduce bubbles but still allow pods to pass through.