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GROTHEN DC 12V Dosing Pump

GROTHEN DC 12V Dosing Pump

Peristaltic Pump Mini Water Liquid Pump Peristaltic Tube Head Self-Priming Function for Aquarium Lab Chemical Analysis Dosing Additives, L Style

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Pump head adopts buckle design without screw, which can be removed through pressing the buckles on both sides with your hands, easy to clean and maintain.
Support CW and CCW: Switching power supply positive and negative pole, realize the CW and CCW of the pump head.
Flow direction: You can control the flow direction by the positive and negative connect.
No valves and seals, convenient hose replacement, easy maintenance. This small dosing pump has the function of self-priming.
Widely used in the field of experiment, medical, biochemical analysis, pharmaceuticals, fine chemicals, biotechnology, food, environmental protection, family, etc.

Model: G328
Color: Black/Green(optional)
Silica Gel Tube(internal dia.*outside dia.): 1mm*3mm/2mm*4mm/3mm*5mm(optional)
Motors: DC12V
Flow Rate:
1*3 silica gel tube: >11ml/min
2*4 silica gel tube: >39ml/min
3*5 silica gel tube: >80ml/min
Pump Head Material: ABS
Pump Pipe: Transparent silicone pipe
Pulsations: Three roller
Package Size: 7.0 * 6.0 * 4.5cm / 2.8 * 2.4 * 1.8in
Package Weight: 84g / 3.0oz

Package List:
1 * Peristaltic Pump
Customer Reviews

Average Rating:


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  • By k***a

    October 1, 2021

    I got this to build a DIY auto top off for my reef tank. I hooked it up to a wall wort 9v power supply and a float switch. It has been working flawlessly and would recommend this to anyone looking to do the same.

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  • By b***y

    September 23, 2021

    Using for dosing fertilizer in a planted aqiarium, works just as intended, it is a little noisy but I don't think that's really avoidable!

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  • By b***v

    September 18, 2021

    I have this motor pulling liquid hand wash soap as part of a Science Fair project for my kid. It works perfectly with a 12v Battery and the soap dispensed is just perfect for my project.

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  • By c***y

    September 14, 2021

    Great little pump. Works great for PH UP and PH down hooked to my meter for aquarium

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  • By b***e

    September 10, 2021

    I am driving this bidirectionally and it works well

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  • By t***y

    September 8, 2021

    I saw a YouTube video on making a DIY PH controller. these worked great in the system! although i did have to test and dilute my solutions to get the correct dosing

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  • By s***.

    September 8, 2021

    I use this on a aquarium. Works good, but requires a smaller tubing than your typical airline tubing.

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  • By o***i

    September 5, 2021

    Like: cheap and work well. Flow rate is very slow so able to do accurate timed doses Dislike: allows for flow-thru so if source is above pump it will empty reservoir very quick, if reservoir is below pump it will allow backflow when motor is off.

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  • By h***t

    September 3, 2021

    Works good. But buyer beware, a flyback diode is required if using with an Arduino or Raspberry Pi, even if you connect it to a relay.

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  • By k***y

    September 2, 2021

    Worked great! While it will work on 9 volts it really does like 12 volts. Had to step up to a different power supply. Pumps in both directions. At 9 volts it took 7 minutes to pump 1 pint of water. Using this to pump fog juice for a DIY fog machine.

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