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The Peacemaker

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Made with 1/4" cast acrylic with a 3/8" acrylic top brace. Lid is made of polycarbonate to resist curling.



The Peacemaker is a way to introduce new fish into your tank for a few days prior to release into the reef.


The Peacemaker is a way to introduce new fish into your tank for a few days prior to release into the reef. Fish can see each other, they benefit from healthy water, and can eat without competition.  The box has 1/4" holes drilled on all four sides to maintain oxygenation. Add some plumbing connectors as great hiding spaces for new fish to duck into for shelter if spooked.

Box area is 12" x 6" x 8" with a lid. Holes are 1/4" in diameter.

This is not a replacement for a quarantine system.

I made the first one for the 400g in 2011, and every new fish was introduced via this box for three days prior to being released. In that time, the fish could see each other, but not interact. Each day, when the tank was fed, so were the fish in the Peacemaker. The lid has a small hole drilled in it to allow the insertion of a pipette filled with thawed food; the lid keeps fish from jumping out. For new wrasse purchases, a 1" layer of sand could be added safely if deemed necessary, or you could place a small bowl full of sand at one end if you prefer.

The top cross piece and the lid are made of 3/8" material for strength. The lid itself is made of polycarbonate and won't warp. For my own tank, the Peacemaker rests on the eurobracing, suspending the box mid reef to keep it in an area of good flow. The boxed area is made of 1/4" material.

Since it only is in the tank for three days at a time, it shouldn't have any issues like bowing. Clean it up upon removal and keep it somewhere safe until the next time.  

Each Peacemaker is custom made to fit your specific tank's requirements. Email me with your measurements, I'll be able to build one for your needs. 

This is a well-built, strong product. It will last you many years with proper care.

Update December 2018: A newer version is now available for rimless aquariums. It hangs on the wall of the aquarium, you can place it where it works best.  These come with a solid lid to keep the fish in the box. See the pictures and the video below.