How do i get a 20mm replacement nozzle for this pump ?

I have been trying to reach this seller for quite some time now without any success. I have used the email address on the box as well as tried messaging them here.... no luck

How do i set this product to be on a steady flow. The manual isn't clear.

If you press the mode button it switches between 3 digit numbers starting with a 1 or a 2. anything starting with 1 is steady flow. If you decide to use wave mode though the number preceded by 1 also affects wave mode. The number preceded by 1 appears to affect duration of the pulse where as the number preceded by 2 affects the time between pulses if the fist number is set to high the pump runs continuously regardless because the cycle doesn't end before the second begins. So long story short if I set the first setting to 101-104 then set the second number to 209-210 my tank really rocks and roles. Timing and duration are key to getting a wave going.

Can I use this pump externally?

Yes and No. Mine leaked external. I had to silicone it by unscrewing it and sealing it completely with silicone. Now it doesn't leak and is external. Caveat Emptor. But, so far a great pump.

yes, i have 2 of the 18000 models and they are both submerged ...

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Orlushy DC-4000 Silent Swirl Controllable DC aquarium Pump 25W 1050GPH-marine wavemaker return pump with sine wave Controller for salt/Freshwater coral reef fish tank sump Circulation

Product ID: 68543846

Details

Brand
Orlushy
Color
Black
Horsepower
25 Watts
Material
Copper
Maximum Flow Rate
17.6 Gallons
Maximum Lifting Height
11.5 Feet

⚡Powerful 25W brushless motor

🔇Ultra-quiet sine wave tech

🎛️20 speeds + 3 modes control

108572CFA

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌊 Silence meets power — control your aquatic world like a pro!

WHISPER QUIET OPERATION - Sine wave frequency conversion and ceramic shaft ensure near-silent pump performance—perfect for serene home or office aquariums.
VERSATILE NOZZLE OPTIONS - Includes 3 nozzle sizes to fit diverse setups—from coral reefs to hydroponics—ensuring perfect water circulation every time.
CUSTOMIZABLE FLOW CONTROL - Easily switch between 20 speed settings and 3 modes (Constant, Wave, Feed) for tailored aquatic environments.
CONFIDENCE BACKED WARRANTY - 180-day warranty with free replacement parts and responsive customer support for worry-free ownership.
ENERGY EFFICIENT DURABLE - Low-voltage 24V DC with pure copper brushless motor delivers powerful 1050 GPH flow while maximizing lifespan and safety.

The Orlushy DC-4000 is a 25W submersible aquarium pump featuring ultra-quiet sine wave technology, a durable brushless copper motor, and 20 adjustable speeds with 3 operational modes. Designed for both saltwater and freshwater tanks, it delivers up to 1050 GPH with versatile nozzle options and a 180-day warranty, making it a top-tier choice for professional and hobbyist aquarists seeking reliable, customizable water circulation.

Specifications

ASIN	B07C52Q4R1
Best Sellers Rank	#19,240 in Pet Supplies ( See Top 100 in Pet Supplies ) #44 in Aquarium Water Pumps
Brand Name	Orlushy
Color	Black
Customer Reviews	4.4 4.4 out of 5 stars (1,336)
Flow Rate	17.6 Gallons Per Minute
Horsepower	25 Watts
Item Dimensions L x W x H	2.64"L x 1.3"W x 1.58"H
Manufacturer	aquariumstation
Manufacturer Part Number	43237-2
Material Type	Copper
Maximum Lifting Height	11.5 Feet
Model Number	43237-2
Power Source	dc
Product Style	Submersible
UPC	634759664451
Unit Count	4.0 Count
Voltage	24 Volts

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108572CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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