1/4 HP Gast Rotary Vane Air Compressor (FREE SHIPPING)

1/4 HP Gast Rotary Vane Air Compressor (FREE SHIPPING) These long lasting, continuous duty Gast Rotary Vane Compressors offer slightly less depth capabilities than the diaphragm compressors but produce considerably more air. Features: Long lasting,...

Pump Pro-Tector

Pump Pro-Tector Protect against plugging by creating a large surface area around the pump Features: Protect against plugging by creating a large surface area around the pump Designed to fit all brands of small pumps Has a polyester filter media...

Pondmaster Volutes

We carry a variety of PondMaster Volutes for PondMaster Submersible Pond Pumps. See the product listing for more information.

True Union Check Valves - Clear

True Union Check Valves - Slip

PondForce Staple Floating Food

The Staple Floating fish food by Pond Force is ideal for daily feeding of all pond fish.Pond Force's brand new formula is rich in vitamins, minerals, and plant extracts. This combination enhances brilliant colors,, and boosts the immune system...

PondCare Pimafix

PondCare Pimafix Pond Care PimaFix is an all-natural medication derived from the leaves of Pimenta racemosa, the scientific name for the West Indian Bay Tree. PimaFix has powerful antifungal and antibacterial properties due to the multiple natural...

PondCare Melafix

Antibacterial remedy for the treatment of koi and goldfish diseases including eye cloud, mouth fungus and fin & tail rot. All-natural antibacterial remedy rapidly repairs damaged fins, ulcers and open wounds. Use when adding new fish to the pond...

Blue Thumb Serenity WaterGarden Kits

Blue Thumb Serenity WaterGarden Kits Blue Thumb Serenity WaterGarden Kits are manufactured using the same principles as the other Blue Thumb products without as many of the added features and benefits. The Blue Thumb Serenity skimmer and waterfall works...

EasyPro Pressurized Bead Filter - up to 1800 gal.

EasyPro Pressurized Bead Filter - up to 1800 gal. EasyPro Pressurized Bead filters offer mechanical and biological filtration for water gardens, koi ponds and hybrid ponds! EasyPro Pressurized Bead Filters can be buried up to control head, if desired,...

Wire Nuts

Outdoor Water Solutions Small Wood Backyard Windmill w/ Red Tip Blades

Outdoor Water Solutions Small Wood Backyard Windmill w/ Red Tip Blades Outdoor Water Solutions Small Wood Backyard Windmill is high-quality, stained wooden windmill. Plus, it is waterproofed and pre-drilled for easy assembly. This decorative small...

OASE Fountain Pumps

OASE Fountain Pumps   The Oase Fountain pumps  are compact in design and powerful in speed, built to optimize any water feature. They offer variations in speed, volume and power consumption and require minimal maintenance. They boast a...

OASE Neptun Pumps - FREE SHIPPING

OASE Neptun Pumps The OASE Neptun fountain pumps make quite the splash! These powerful but quiet pumps are built to move water in larger installations. They are frost proof and inline capable and promise low energy consumption. When space is at a...

4 Way Statuary Splitter - 3/4" with 1/2" Valves

4 Way Statuary Splitter - 3/4" with 1/2" Valves 3/4" threads on main body, 1/2" male threads on valved outlets Can be connected end to end to make 8, 12, 16, etc. manifolds Can handle up to 1200 GPH flow, high flows use 1" spitter Can be used with...

1/4 HP Matala MPC-60A Compressor (FREE SHIPPING)

1/4 HP Matala MPC-60 Rocking Piston Compressor (single head) with air filter (FREE SHIPPING) This Matala Rocking Piston stand alone compressor can be installed in a variety of applications. Adapt to your existing system or create a custom system. For...

Microbe-Lift Broad Spectrum Disease Treatment

Microbe-Lift Broad Spectrum Disease Treatment Use for diseases caused by Ichthyophthirius (Ich), Chilodonella, Costia, Oodinium, Trichodina, fungal & fungus infections Formulated with Malachite Green & Formalin MICROBE-LIFT/Broad Spectrum...

Matala Diffuser Disc with Base - 5" and 7"

Matala Diffuser Disc with Base - 5 and 7" MD-5W Diffuser Specification: Flow: up to 20 lpm or 0.70 cfm each. Disc body: PP+Lead Membrane: EPDM Connection: 1/4" Dimensions: 5 inch diameter Weight: 2.36 MD-7W Diffuser Specification: Flow: up...

Matala Weighted Diffusers -12"

Matala Weighted Diffusers The MTD-300W 12" long  These are self-weighted 2" diameter tubes with a rubber membrane wrapped around the outside. The MTD-300W and 600W come with 2 separate barbs which must be glued in place. Use regular PVC glue. The...

KoiToilet I Aerated Bottom Drain - 3" Drain

KOITOILET I AERATED BOTTOM DRAIN 3" The most versatile and complete solution for Aerated Koi Pond Bottom Drains! Features: Sweep bottom design to eliminate trapping debris. Full 4" height over horizontal discharge pipe. Screws are fully...

Koi Toilet I - 4 Inch

KOITOILET I Aerated Bottom Drain 4" w/ Disc Diffuser The most versatile and complete solution for Aerated Koi Pond Bottom Drains! Features: Sweep bottom design to eliminate trapping debris. Full 4" height over horizontal discharge pipe. Screws are...

Kasco Robust-Aire 1 Rocking Compressor Kit - NO Cabinet

1/4 HP Kasco Robust-Aire System 1 - NO Cabinet (FREE SHIPPING) The Kasco Robust-Aire Systems common applications include: backyard ponds & lakes, industrial, mixing, winterkill prevention, waterfowl protection, and more. All Robust-Aire diffused...

1/4 HP Kasco Teich-Aire Rocking Piston Compressor

1/4 HP Kasco Teich-Aire Rocking Piston Compressor - FREE SHIPPING Kasco’s Teich-Aire Rocking Piston Compressors are continuous-duty, oil-free, aeration compressors that are a great choice for aerating ponds and other deep-water applications...

Bolts for Flange Sets

Each 6" and 8" flange set is bolted together with a set of eight 3/4" boltsA bolt set consists of one 3/4" x 43/4" bolt with nut and lock washerThe 10" flange requires twelve bolts 7/8" x 5 3/4", available at your...

EasyPro Quick Sink Self-Weighted Assembly Single Diffuser (FREE SHIPPING)

EasyPro Quick Sink Self-Weighted Assembly Single Diffuser EasyPro Quick Sink Self Weighted Diffusers offer the same membrane diffuser performance but now have a self sinking design. Features: Self weighted base with powder coated finish Sch. 80...

EasyPro Pro-Series Mini Skimmer - FREE SHIPPING

EasyPro Pro-Series Mini Skimmer - FREE SHIPPING Easy Pro Mini Skimmer is a smaller skimmer that skims ponds up to 250 square feet. This unit is built to the same high quality standards as our larger skimmers, but in a smaller model. Ideal for smaller...

EasyPro Pro-Series Small Skimmer (FREE SHIPPING)

EasyPro Pro-Series Small Skimmer - FREE SHIPPING Our best selling skimmer! Innovative design allows you to choose between a vertical filter mat or filter brushes. EasyPro Small Skimmer is our best selling skimmer and skims ponds up to 600 square feet...

EasyPro Concentrated Pond Dye

Pond dyes work on the light reduction principle. All plants need sunlight to grow. By reducing the amount of light penetration into the water, the dyes effectively reduce weed growth. Early application is critical; dyes should be applied as early as...

EasyPro Medium Head Pumps (FREE SHIPPING)

EasyPro Medium Head Pumps (FREE SHIPPING) If you are looking for a great quality pond pump at an affordable price point, look no further! Features: Not self-priming - use in flooded suction applications or with check valve on suction line to...

EasyPro Filter Floss Bio Media

EasyPro Filter Floss Bio Media Flat strapping embossed on both sides creating additional surface area for bacteria Light weight ribbon type material commonly used in our AquaFalls pond filters Each box fills three MB21 mesh bags (21 x 30-in.) and...

Matala Post Mounted Cabinet

Matala Post Mounted Cabinets (CABINET-MPP)  

K-Traps B Minnow Traps

K-Traps B Minnow Traps Hand built assuring the finest quality! Constructed from woven, galvanized mesh, zinc coated screws and steel/aluminum rivets. Mesh size is ¼". A waterproof sealer is added to prevent jagged edges, rust or corrosion. Each...

Butterfly Valve - 6"

Butterfly Valve - 6" Large valves ideal for use in creating back pressure on large pumps Locking handle keeps valve from moving due to high flow or vibration Use with PVC flanges, each valve needs a flange (part BS or OF) on both sides to glue onto...

Plumbing Kit for Basalts Fountains

Plumbing Kit for Basalts Fountains PK1L Connects pump to 3 basalt columns Includes friction ring to hold tubing inside basalt PK3L Connects pump to 3 basalt columns Includes friction ring to hold tubing inside basalt Includes splitter,...

Atlantic Typhoon Air Pump - 30 lpm (FREE SHIPPING)

Atlantic Typhoon Air Pump - 30 lpm  Atlantic’s Typhoon Air Pumps feature indoor/outdoor, continuous duty diaphragm compressors specifically designed for year-round usage. Ideal for aeration and circulation in warm weather, these aerators are...

Atlantic TPS200 Shallow Water Compressor - 3.9 cfm

Atlantic TPS200 Shallow Water Compressor - 3.9 cfm Features: Compressors efficiently deliver pressurized air to specific depths Designed for the shallos, linear piston compressors combine the rugged reliability of a piston and cylinder system with...

Atlantic Pro Series Professional Small Pond Kit - 6 x 11 ft. (FREE SHIPPING)

Atlantic Pro Series Professional Small Pond Kit - 6 x 11 ft. FREE SHIPPING Atlantic Water Garden pond kits offer a convenient, easy and affordable way to achieve a balanced system. Atlantic Pond Kits save you time and money by avoiding costly...

Outdoor Water Solutions Floating Pond Gator - 28"

Outdoor Water Solutions Floating Gator with Bright Red Reflective Eyes The ultra-realistic Floating Gator Alligator head frightens away pond predators like herons, cormorants, egrets, and other animals. The gator floats naturally across ponds, koi...

Aquascape Small Stacked Slate Urn Kit

Aquascape Small Stacked Slate Urn Kit - Create a natural paradise in your back yard.  The Aquascape Small Stacked Slate Urn Fountain Kit is ideal for creating an impressive, natural-looking stacked slate urn fountain in any location. The...

Aquascape Premium Fish Food Flakes

Flake food ideal for all pond fish. Keeps pond water clean and clear. Includes stabilized multivitamin. Will not break apart and cloud water. Contains high quality protein. Will promote brilliant colors on all pond fish. Aquascape Premium Flake Fish Food...

Aquascape Pondless Waterfall Vault

Aquascape Pondless Waterfall Vault  The Aquascape Pondless Waterfall Vault was designed to integrate with the AquaBlox making installation a snap. The Pondless Waterfall Vault's standard height is for basins using the Small AquaBlox. The vault's...

Anjon Ignite LED Puck Light - 1 Watt

Anjon Ignite LED Puck Light - 1 Watt Ignite Pond Lights are the perfect way to turn your scenic, natural outdoor landscape and water feature into a beautiful nightscape. From dynamic color changing pieces, to automatic daylight sensing activation,...

Blue Thumb Extra Tall Maple Fountain Tree Kit (FREE SHIPPING)

Blue Thumb Extra Tall Maple Fountain Tree Kit - ABCF700K (FREE SHIPPING) AquaBella Copper Fountain Trees bring together art, metal, & water exactly where they belong...at your home. Hand made by our designer in the most tranquil place in the midst...

PondCare pH Down - 16 oz.

PondCare pH Down - 16 oz. Slowly lower the pH of your pond water to make it more acidic using API® POND pH DOWN pH adjuster. This product slowly neutralizes alkaline substances that cause high pH, which limits the ability of aquatic plants to absorb...

EasyPro All-In-One Pond Package

EasyPro All-In-One Pond Package EasyPro All-In-One Package combines the four 16 oz bottles of popular water treatments into one easy package: All-Season Bacteria Water Conditioner Clarifier Liquid Barley Extract All-Season Bacteria Works in a...

Weedtrine-D Herbicide - 1 gallon

Weedtrine-D Herbicide - 1 gallon   Weedtrine-D is a fast acting, broad range herbicide that controls duckweed, coontail, elodea, naiad, pondweed and milfoil. Absorption and herbicidal action of Weedtrine®-D is usually quite rapid...

EasyPro Eco-Series Prelude Waterfall - 13-in.

EasyPro Eco-Series Prelude Waterfall - 13-in. These patented waterfall filter boxes are the easiest to install of any similar style filter on the market today. Patented "Spliner Lock" system attaches liner securely and easily - no bolts, no silicone - no...

Atlantic Basin for 12 inch Spillway

Atlantic Basin for 12 inch Spillway  Atlantic's Basins are perfect for hardscape installations or small pond-free waterfalls. The basins come in two different sizes and have built in plumbing channels to accommodate whatever the project. For a...

Tranquil Decor 3 Way Statuary Splitter

3 Way Statuary Splitter This splitter is ideal for operating multiple pieces of statuary off a single pump 1/2" and 3/4" stepped barb fittings on inlet and outlet Individual flow control valve of each line

Encore Stainless Transformer with Built In Timer- 75 Watt

Encore Stainless Transformer with Built In Timer- 75 Watt The Encore Landscape Lighting System combined with Encore’s superior products will create beauty, safety, and security all in a simple-to-install system. The Encore Landscape Lighting...

Atlantic Triton 3 Way Diverter

Atlantic Triton 3 Way Diverter Atlantic Triton 3-Way Diverter is the only manifold designed for pond-free fountain installations. Also works great for fountains and ponds. The Triton 3-Way Diverter works with the FB4600 Fountain Basin to provide...

Tetra Easy Strips 5 in 1

At Under Water Warehouse our goal is to help you succeed. Now, Under Water Warehouse provides easy-to-use test strips to assist you in keeping a healthy, vibrant pond. Results for Nitrate, Nitrite, General Hardness (GH), Alkalinity (KH) and pHMore...

Microbe-Lift Phosphate Test Kit

Salt & Fresh Water UseWater MUST be tested regularly to maintain GOOD WATER QUALITYManaging phosphate levels is the most natural way to AVOID ALGAE bloomsThe original Single-dip Test ProcedureNote: If saltwater appears cloudy match to the closest...

Microbe-Lift Nitrate and Nitrite Tests

Salt & Fresh Water Use - 50 Test Strips! Water MUST be tested regularly to maintain GOOD WATER QUALITY. Helps to determine if POND is CYCLINGHelps easily MONITOR fluctuating levels of: NITRATE which can stimulate unwanted algae growthNITRITE which...

Microbe-Lift Ammonia Test Kit

Allows you to easily monitor ammonia levels to keep the water quality safe for fish and other aquatic life. Fresh Water Use Water MUST be tested regularly to maintain GOOD WATER QUALITY This is a salicylate based test strip which tests well with...

Filter Tank - 40 Gallon

Small in size, but big in performance, the T40F Filter Tank provides all the installation conveniences and advantages as the larger Filter Tanks, but in a more compact size. With flow capabilities up to 80 GPM (4,800 GPH) the T40F is the perfect fit for...

1/5 HP ShinMaywa Pump - 3300 gph (FREE SHIPPING)

1/5 HP ShinMaywa Pump - 3300 gph (FREE SHIPPING) ShinMaywa are the finest pumps for the water garden market. Designed to be a truly continuous duty motor so you can run you water feature 24/7/365 with confidence. The ShinMaywa pumps are constructed of...

Seneye Pond Pack

Seneye Pond Pack The Seneye Pond has all the features of the seneye home plus a seneye pond float and an advanced dashboard making it perfect to monitor your pond. It can guard fish from the devastating effects of ammonia poisoning, as well as...

Keeton Remote Manifold - 8 Valve

No power at the shore? No Problem.Now take advantage of utilizing your existing electric outlets, even far distances from the water, by using our Remote Manifold. Same high quality results, just added convenience. A single tubing run from the system to...

Keeton Remote Manifold - 4 Valve

No power at the shore? No Problem.Now take advantage of utilizing your existing electric outlets, even far distances from the water, by using our Remote Manifold. Same high quality results, just added convenience. A single tubing run from the system to...

Filtrific Remote Filter

Filtrific Remote Filter Remote Filter Skimmers allow for enhanced debris skimming by pulling water from different areas of the water feature. Add additional skimming and flow capacity to the Filter Tank GPM: 80 Connection: 4" Included...