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EasyPro QS1 Quick Sink Self-Weighted Diffuser Assembly for Lake & Pond Subsurface Aeration/Low Maintenance Single EPDM Rubber Membrane

  • Based on 74 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Webb's Water Gardens

Arrives Tuesday, Jun 30
Order within 11 hours and 11 minutes
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Size: Single Diffuser


Features

  • SELF WEIGHTED. No need for sand/gravel. This quick sink diffuser with powder coated steel base provides an easy and trouble free installation.
  • PERFECTLY EVEN DIFFUSED AIR. Handles airflow from 0.8 3 CFM. Produces a high volume of small bubbles to evenly mix the oxygen in the water column to aid in the promotion of beneficial bacteria and water quality.
  • COMPATIBLE with EASYPRO AIR COMPRESSORS. This dual membrane diffuser is best to use with EASYPRO AIR COMPRESSORS to increase functionality and greater air flow to the diffuser without the need for electricity in water.
  • Stainless steel hose clams and strain relief hardware. Designed for fresh water applications
  • ASSEMBLED IN USA. FIVE YEARS WARRANTY

Brand: EasyPro Pond Products


Color: Grey


Recommended Uses For Product: Nursery


Material: Powder-coated Steel


Special Feature: Quick Sink Self-Weighted Design


Brand Name: EasyPro Pond Products


Model Name: ZSC-QS1


Model Number: ZSC-QS1


Set Name: Single Diffuser


Number of Items: 1


Manufacturer: EasyPro Pond Products


Item Weight: 1 Pounds


UPC: 812506017105


Unit Count: 1.0 Count


Manufacturer Part Number: QS1


Additional Features: Quick Sink Self-Weighted Design


Power Source: Corded Electric


Automatic Shutoff: No


Mounting Type: Submerged


Floor Area: 500 Square Feet


Coverage: [VARIES]


Color: Grey


Shape: irregular shape


Material Type: Powder-coated Steel


Material Type Free: Powder-coated Steel, Schedule 80 PVC (only materials specified, no other materials mentioned)


Recommended Uses For Product: Nursery


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Jun 30

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Well built, easy to place, and runs reliably
Size: Single Diffuser
I bought this last year to add additional aeration to my pond, and it’s been running 24/7 since then with no issues. Right out of the box, everything looked well put together. The construction seems solid, and everything was the right length with no need to adjust or modify anything. One of the main reasons I chose this unit was the weighted base. My previous aerator required filling the base with gravel or setting up some kind of anchor, so having this one ready to go was a big plus. Another feature I really like is the two drilled holes in the base. They’re perfect for attaching a cable and small buoy. That makes it easy to retrieve the unit in deeper water without needing to dive for it. If those holes weren’t there, I would have added them myself. Pros: Solid construction and good quality control Weighted base, no need for extra anchoring Built-in holes for attaching a retrieval line Reliable, runs continuously without issues Cons: None in my experience Bottom line: Great diffuser that’s well thought out and easy to use. I would recommend it. ... show more
Reviewed in the United States on March 23, 2026 by SimpleMan

  • Awesome Idea
Size: Single Diffuser
Shipping really fast, easy to install, works really well with my windmill aerator.
Reviewed in the United States on July 29, 2023 by Von

  • Good till fitting broke Good till fitting broke
Size: Single Diffuser
I bought 3 of these aerators. Quality seam good till I noticed it wasn't bubbling correctly. Went to the hardware store and was able to use a 3/8" ID x 1/2" MIP brass fitting and a 3/4"MIP x1/2" FIP to replace the broken fitting. I no longer have a back flow stop but at least it's working again. Other than that the units work great. ... show more
Reviewed in the United States on August 10, 2022 Reviewed in the United States on August 10, 2022 by Jason A

  • Good product, great company.
Size: Single Diffuser
Similar to a few other purchasers of this product the diffuser broke off from the base. It just happened one day after having been in the same spot in the pond for a year. I contacted EasyPro and they took ownership of the issue and the solution in the first communication. 3 days later the diffuser is good to go and most importantly our ponds and koi are smiling. ... show more
Reviewed in the United States on September 10, 2022 by Thell B. Fowler IV

  • High quality base and membrane
Size: Single Diffuser
This bottom diffuser is high quality components. The only item that would make it better would be to add a 6” extension to get disk off of bottom so it doesn’t draw sediment. I added my own.
Reviewed in the United States on April 17, 2024 by K. Sanderson

  • Excellent, PLUS!!!
Size: Single Diffuser
THIS is just what my outside koi pond has been wanting! I was using a smaller type of stone diffuser and always ended up replacing them the next season. THIS baby is bigger, and I LOVE the weighted base and the secure fittings that keep the hose line intact. This is my first winter with it (and I live in Northern Vermont with brutal winters) so I'll update come Spring, but from what I'm seeing I have every confidence that this will deliver. ... show more
Reviewed in the United States on November 28, 2020 by John Crispell

  • Diffuser
Size: Double Diffuser
One of the rubber membranes was not fully perforated, so only half of the bubbles come out of that membrane. The other 3 are functioning perfectly with a full plume of bubbles. Do you have another 10 inch, fully-perforated rubber membrane you could send me?
Reviewed in the United States on September 21, 2023 by Kathleen Kohutko

  • Nice diffuser
Size: Single Diffuser
Works great!
Reviewed in the United States on January 31, 2022 by Kenneth R. Magar

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