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AST Endurance Bead Filters

The AST Endurance filter is an advancement of our patented PolyGeyser technology with the addition of many new enhancements and increased performance features. Shop from our variety of solutions below.
 
AST Endurance Standalone Filters are perfect for replacing an existing filtration system.  Each unit comes with a filter pre-filled with enhanced bead media, an adjustable flowmeter, and associated air fittings, check valves, tubing and brackets.
 
AST Endurance Base Kits have everything you need for a simple, reliable filtration system. Each unit comes with a filter pre-filled with enhanced bead media, an adjustable flowmeter, and associated air fittings, check valves, tubing and brackets. Plus, an air pump and pressure gauge.
 
AST Endurance Plug & Play Systems are prefabricated, turnkey filtration systems require very little setup time. Each unit comes with a filter pre-filled with enhanced bead media, an adjustable flowmeter, air pump and pressure gauge, and associated air fittings, check valves, tubing and brackets. Plus, a UV sterilizer, water pump, and mounting skid with all components professionally pre-plumbed.
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Koi Pond Supplies & Water Garden Equipment

Underwater Warehouse is your ultimate destination for koi pond supplies and equipment. We offer everything you need to create, maintain, and enhance stunning water features and backyard water gardens. Whether you're a seasoned pond enthusiast or just starting, our wide selection of koi pond filters, pumps, liners, water treatments, and more ensures your water feature stays beautiful. Get all your pond essentials shipped conveniently throughout the United States.

Pond Supplies, Kits, & Lighting

Discover everything you need for your koi pond or water garden at Underwater Warehouse. Our collection features essential pond supplies, including convenient pond kits for new setups or upgrades. Illuminate your water features with our variety of pond lighting options, transforming your backyard into a stunning focal point.

Water Garden Supplies

Create a peaceful water garden oasis in your backyard with Underwater Warehouse. We offer a full array of water garden supplies, including external and submersible pumps, and essential water treatments. Our products help maintain a healthy, thriving natural ecosystem, ensuring your water feature stays beautiful all year long.

Water Features and Fountains

Elevate your backyard with our stunning selection of water features and fountains. Whether you're seeking a small, decorative fountain or a grander water feature to complement your koi pond or lake, we offer a wide variety of styles and sizes. Our beautiful and functional pieces help you create a serene and inviting outdoor oasis.

Our Partners

Lighting World WarehousePond WarehouseAll Alliance LightingThe Pond & Rock Shop