I remove the top cover and the drip tray and lay a piece of egg crate on top of the bio media. You might have to take some bio media out to accommodate the floss. Then I put about 3x or 4x ply floss on the egg crate and then the drip tray and top cover. The second pic is before the top cover goes on.
I did this so that the water coming in flows all over and drips on all the media. I saw that when I put floss on the drip tray that the bio media at the outer edges were dry, therefore underutilized. This has been an easy fix and handles at least 80% of mechanical filtration in my tanks.

I did this so that the water coming in flows all over and drips on all the media. I saw that when I put floss on the drip tray that the bio media at the outer edges were dry, therefore underutilized. This has been an easy fix and handles at least 80% of mechanical filtration in my tanks.

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