Biopellet reactor

[apexifd]

Originally Posted by Reef Pilot

No, you can't use the sponges for bio pellets. Unfortunately can't remember what they are called at Michaels. But they are round plastic mesh screens that you cut to size. I used them for both the top and bottoms.

It's at the knitting section.

[straightrazorguy]

It's called "Cross-stitching plastic canvas". It's a couple of bucks on ebay, or available at any sewing-cross-stitching supplies store. They come in different sizes and mesh sizes. You cut them to size.