HOME    PUMP    QL-521 Series SINE DC WATER PUMP
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QL-521 Series SINE DC WATER PUMP

Features:

Separate motor and drive;

Adjustablen flow controller,energy saving;

IC chip control,lack of water,stuck protection;

Suitable for freshwater and marine use;

5 minutes stop feeding function.

 

 

Specification

Model:

Power

Head of Delivery

Inlet/Outlet(mm)

Voltage

Size(mm)

1000L/H

15W

1.8M

18 20

DC24V

120×67×93

2000L/H

20W

2.2M

18 20

DC24V

120×67×93

3000L/H

28W

2.8M

20 25

DC24V

162×79×106

4000L/H

32W

2.8M

 

DC24V

162×79×106

5000L/H

43W

3.2M

20 26 32

DC24V

210×89×119

6000L/H

55W

3.6M

20 26 32

DC24V

210×89×119

9000L/H

80W

4.3M

20 26 32

DC24V

210×89×119

12000L/H

85W

4.8M

20 25 32 38

DC24V

210×89×119

15000L/H

110W

6.0M

25 32 40 50

DC48V

262×126×150

20000L/H

150W

6.3M

25 32 40 50

DC48V

262×126×150

25000L/H

180W

7.0M

25 32 40 50

DC48V

262×126×150

 

 

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Detail Shows

 

FAQ

1.Are you manufacturer or trader?
  --QLOZONE found in 2015,Integrating production and trade together,,the first manufacturer of KOI pond filter from China. 

2.Can I customize the filter?
  --Support OEM&ODM orders.
  --Customize size for water inlet&outlet.
  --Customzie filter design based on your drawing.
  --Customize material for indoor or outdoor use.
   Contact QLOZONE team to help!

3.What types of pond filters do you offer?
   --Combi drum filter QL-YCM series, with drum filter chamber+bio filter chamber with K5 media+UV chamber, fully automatic
   --Combi drum filter QL-YCM-B sereis, with drum fitler chamber+UV chamber+bio chamber with matts and bacteria house, matts need to wash it manual
   --Bakki shower filter QL-TK sereis, help increse the oxygen in water
   --Drum filter QL-PM series, filter the impurity over 70 micron
   --Stainless steel manul clean filter QL-YC sereis, with blush,matts, bip ball, bacteria house,ceramic rings
   --UV sterilzer
   --Pond pump

4.How do I choose the right filter for my pond?
  Consider:
  --Pond volume (in gallons/liters).
  --Fish load (e.g., koi ponds require heavier filtration).
  --Flow rate (matched to your pump’s capacity).
   Contact QLOZONE team to help!

5.How often should I clean/maintain the filter?
  --Mechanical pads: Rinse weekly (use pond water to preserve bacteria).
  --Biological media: Clean sparingly (every 2–3 months) to avoid disrupting bacteria colonies.
  --UV: Replace annually.

6.Can I use the filter in winter?
   Yes, but:
   --Biological filters: Pause use if water freezes; bacteria become dormant.
   --Mechanical/UV filters: Run continuously if the pond isn’t frozen.

7.Do I need a UV filter if I already have a biological filter?
  --UV filters are optional but recommended for green water (algae) control. Biological filters alone won’t remove algae.

8.How long does it take for a new filter to establish beneficial bacteria?
--Typically 4–6 weeks. Use a bacterial starter culture to speed up the process.

9.What’s the warranty period?
--All filters come with a year limited warranty,lifelong technical support. 

10.Where can I buy replacement parts/media?
--Contact QLOZONE team for Support.

11.Still have questions?
Email us at qlozone@qlozone.com or call +86 185 2073 9875.

 

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