is there a flow chart for differences in head pressure?

the smaller the restriction, the harder the pump will work thus it will overheat. These are not magnetic drives and will not adapt to flow reduction like a brew (aka Riptide) pump. Keep an eye on the heat generated (run in cooler or 5 gal bucket) w/return flow and take water temps over an hour or two. Just restricting the flow will NOT push farther but may make it overheat, use more amps, and then burnout (see user pics of fried extension cords)

What is the pipe thread size of the discharge side of the pump?

It’s actually 0.75 inch thread. I just measured.

Does this have auto shut off?

Auto shutoff for what purpose? Two possibilities would be: A timer would switch it ff and on at prearranged times. For a malfunction due to no water going through, you will ideally want to power it through a ground fault interrupt circuit so in the event the water source accidentally runs dry the pump will not burn out.

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GROWNEER 550GPH Submersible Pump 30W Ultra Quiet Fountain Water Pump, 2000L/H, with 7.2ft High Lift, 3 Nozzles for Aquarium, Fish Tank, Pond, Hydroponics, Statuary

Product ID: 401688604

Details

Brand
GROWNEER
Colour
Black
Item Weight
19 Ounces
Material
Plastic
Maximum Flow Rate
33 Liters Per
Maximum Lifting Height
7.2 Feet

⚡30W energy-efficient motor

💧550 GPH max flow

📏7.2 ft max lift height

301.35 DT

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Description

💦 Elevate your aquatic vibe with power, precision, and style!

POWERFUL EFFICIENT - 30W motor delivers robust 550 GPH flow while saving energy—performance meets sustainability.
PRECISION FLOW CONTROL - Adjust water pressure seamlessly with the built-in control knob for your perfect aquatic ambiance.
VERSATILE NOZZLE OPTIONS - Three threaded nozzles (0.51"/0.62"/0.75") let you customize water flow and style effortlessly.
MULTI USE AQUATIC ESSENTIAL - Ideal for aquariums, hydroponics, fountains, and ponds—keep your water fresh, oxygenated, and visually stunning.
SECURE FLEXIBLE INSTALLATION - Long 5.9ft cord plus 4 strong suction cups ensure stable placement anywhere in your aquarium or pond.

The GROWNEER 550GPH Submersible Pump is a compact, energy-efficient 30W water pump designed for aquariums, ponds, and hydroponic systems. It features adjustable flow control, a maximum lift height of 7.2 feet, and three interchangeable nozzles for versatile water flow customization. Equipped with a long power cord and suction cups, it offers easy, secure installation to keep your aquatic environment fresh and visually captivating.

Specifications

ASIN	B07MDBYTLS
Best Sellers Rank	#85,651 in Pet Supplies ( See Top 100 in Pet Supplies ) #908 in Water Pumps (Pet Supplies)
Brand Name	GROWNEER
Colour	Black
Customer Reviews	4.2 4.2 out of 5 stars (11,494)
Flow Rate	33 Liters Per Minute
Horsepower	30 Watts
Item Dimensions L x W x H	8.4L x 5.6W x 6.9H Centimeters
Item Weight	19 Ounces
Manufacturer	GROWNEER
Manufacturer Part Number	WP550-3
Material Type	Plastic
Maximum Lifting Height	7.2 Feet
Model Number	WP550-3
Number of Items	1
Number of Packs	1
Power Source	Corded Electric
Product Style	Fountain
Specific Uses For Product	Aquarium, Fountain, Outside，inside, Pond
UPC	653334368010
Unit Count	1.0 Count
Voltage	110 Volts

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301.35 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered 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 Tunisia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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