Quickest Cheapest Easiest Divider. Quick!!!!!

  • We are currently upgrading MFK. thanks! -neo

I use eggcrate tied together with zip ties, and always put some horizontal pieces on the bottom for stability, I put rocks on them in large, strong fish situations.

I also leave enough to protrude above the water, and notch out a piece for the tank rim, adds even more stability to fit it snuggly in the rim.
 
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