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
Manufacturer
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

€ 128.38

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌊 Silence meets power — elevate your aquarium’s vibe effortlessly!

RISK FREE INVESTMENT - 180-day warranty with free replacement parts and responsive customer care.
TAILORED FLOW CONTROL - 20 adjustable speeds & 3 modes (Constant, Wave, Feed) for perfect tank dynamics.
ENERGY SMART DURABLE - 24V low voltage with pure copper brushless motor for long-lasting, efficient flow.
WHISPER QUIET OPERATION - Sine wave frequency tech + ceramic shaft = near-silent aquatic harmony.
VERSATILE NOZZLE OPTIONS - Three nozzle sizes included to customize flow for any aquarium or aquatic setup.

The Orlushy DC-4000 is a 25W submersible aquarium pump delivering up to 1050 GPH with ultra-quiet sine wave technology and a durable copper brushless motor. It offers 20 speed settings and 3 operational modes via an external controller, suitable for both saltwater and freshwater tanks. Equipped with multiple nozzles and backed by a 180-day warranty, it ensures customizable, efficient, and whisper-quiet water circulation for coral reefs, fish tanks, and aquatic environments.

Specifications

ASIN	B07C52Q4R1
Best Sellers Rank	#24,371 in Pet Supplies ( See Top 100 in Pet Supplies ) #65 in Aquarium Water Pumps
Brand	Orlushy
Brand Name	Orlushy
Color	Black
Customer Reviews	4.4 out of 5 stars 1,333 Reviews
Flow Rate	17.6 Gallons Per Minute
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	Copper
Material Type	Copper
Maximum Lifting Height	11.5 Feet
Model Number	43237-2
Power Source	dc
Product Dimensions	2.64"L x 1.3"W x 1.58"H
Product Style	Submersible
Style	Submersible
UPC	634759664451
Unit Count	4.0 Count
Voltage	24 Volts

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