API Test Tube Holder

3D Printed API Test Tube Holder – Keep Your Water Tests Organized and Spill-Free

Streamline your aquarium maintenance with our 3D Printed API Test Tube Holder, specially designed to securely hold standard API freshwater and saltwater test tubes. Whether you’re a casual aquarist or a seasoned reef keeper, this sturdy holder helps make water testing cleaner, faster, and frustration-free.

🔬 Custom Fit for API Test Tubes – Holds up to 6 tubes snugly in place, so you can run multiple tests at once without tipping or spilling.

🧪 Perfect for Water Testing Kits – Compatible with API Master Test Kits and most standard test tubes used in aquarium water analysis.

💡 Neat, Tidy & Practical – Keeps your workspace organized and your hands free while results develop. Great for preventing messes and mix-ups!

🌈 Durable & Lightweight – Made from high-quality PLA plastic, it’s both sturdy and lightweight. Available in a range of colors to match your tank setup or personal style.

🛠️ Designed by Hobbyists, for Hobbyists – Thoughtfully designed to improve your aquarium routine with a sleek, compact form that fits neatly on any shelf or workspace.

Whether you’re testing pH, ammonia, nitrites, or nitrates, this 3D printed holder is a smart addition to any aquarist’s toolkit.