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FAQ about Koi pond filters

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 [email protected] or call +86 185 2073 9875.

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