Acrylic Fish & Anemone Acclimation Box

Keep your fish safe and your tank peaceful with our flow-friendly, reef-safe isolation box. Whether you’re adding a new fish, giving a shy one time to adjust, or helping a recovering fish heal, this box makes the process smoother for everyone. Made from clear, marine-safe acrylic, it’s built to last and won’t mess with your tank’s look or water flow. It’s also great for keeping a new anemone in place or giving baby fish a safe space to grow.

The large cutout holes provide excellent water flow so there are no dead zones, helping maintain oxygen levels and consistent tank conditions. The top is removable, making it easy to access or feed your fish inside. And to keep everything secure, the box attaches with two pairs of strong magnets—no suction cups, clips, or stress.

Available sizes: 6” to 20”
Magnet strength: Works on glass or acrylic up to 1” thick (same magnets for all sizes)
Color options: Neon green, neon pink, black, orange, white, and clear (cast acrylic)
Note: Please allow an additional 2 days for colored options if not currently in stock.

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Disclaimer:
• For aquarium use only. Not intended for any other applications.
• Do not soak this box in vinegar or citric acid. Acidic solutions can weaken the bonded joints and damage the structure.
• Acrylic may develop minor surface scratches over time, especially in high-flow or contact areas.
• Handle magnets carefully—they’re strong and can pinch or snap together forcefully.
• Not meant for long-term confinement—best used for acclimation, isolation, or short-term grow-out.
• Rinse thoroughly with fresh water before placing it into your tank.
• Slight color or clarity variations may occur due to differences in acrylic manufacturing.