The Octo Pen™ is great for mushrooms and other corals you want to isolate from the rest of your tank. Fabricated out of 1/8" acrylic, available in clear or black. The Octo Pen™ sits on the bottom of your tank and the 1/4" slots on all four sides allow for flow from multiple angles.
Size shown is 7" x 7" x 4", but I can custom make them any size!
Order HERE.
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