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Air Pumps and Accessories

Pond Aeration systems offers a simple and inexpensive way to dramatically improve water quality in larger ponds. A compressor outside the pond pumps air through small diameter hoses to a weighted diffuser located at the bottom of the pond.

The air diffuser generates air bubbles. As these bubbles float to surface, they carry water with them. When this water reaches the surface it spreads outward, allowing dissolved gases in the water to escape into the atmosphere and oxygen in the atmosphere to diffuse into the water. Since the aerated water came from the bottom of the pond, it is colder than the surface water and gradually descends to the bottom of the pond where it drifts towards the diffuser and completes the circulation loop. Larger ponds may require multiple or large air compressors and diffusers depending on depth and shape.

  • Amount: 1 cubic foot per minute (cu ft/min) of flow rate
  • Equals: 28.32 Liters per minute (L/min) in flow rate
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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.

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