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Rubber Membrane Diffuser - 12" Long - 3/8"-1/2" - RAD12

Rubber Membrane Diffuser - 12" Long - 3/8"-1/2" - RAD12
Suggested Retail$25.69
Our Price$21.83You save15%
Usually ships the same business day

Product Details

These EPDM rubber air diffusers are incredibly strong and are ideal for pond aeration, circulation and destratisfyingapplications. Unlike cheap air stones, these diffusers are easy to clean. EPDM membrane cleans much better and easier than the porous air stones.These diffusers are an excellent choice for pond and water garden aeration since they actually produce more circulation and water movement.Barbed inlets have multiple size barbs. Simply cut to fit the size tubing you are using.

In testing; these air diffusers produce a slightly larger air bubble than the air stones, which translates into less oxygen transfer into thewater. So for fish holding tanks, raceways, fish productions ponds, etc. we recommend usingalumina air stones.

  • Item # RAD12
  • Approximately 12" in length
  • Inlet size is 3/8" and 1/2" Barb
  • Recommended airflow (CFM): 0.9
  • Maximum airflow (CFM): 3.5

Product Reviews

4 stars based on 1 review 
Austin, TX
Works well as long as you have enough air going through it. I use a pump that puts out 1700 cubic inches/minute. It's model AP-20 Supreme-Hydroponics by Danner Manufacturing, which is very quiet by the way. Anything less than 1000 cu in/min would not be advisable in my opinion. The air bubbles are larger than I expected, but with 1700 cu in/min it works just fine. I use it for making compost tea, 100 gallons at a time. My only complaint is that air escapes more from the ends, so the bubbles are larger than from the body. I expected the air bubbles to be uniform throughout. It doesn't seem to be a manufacturing defect, but just a way that it's made. I would prefer to use a silica stone if I had to do it over again to get the smaller bubbles, but I chose this one since it is easier to clean and will probably last longer.
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Estimated Delivery Date

All of our in-stock products usually ship the same or next business day. The table below will show you an estimated* date your order will arrive. See special notes below

Shipping Method Approximate Processing Time Approximate Shipping Time Estimated Delivery Date
Eco-Saver Shipping 1-3 business days if ordered by 12:00 Noon EST 2-10 Business Days
Ground Service Same to Next day if ordered by 1:00 PM EST 2-7 Business Days
3-day Select Same day if ordered by 1:00 PM EST 3 Business Days
2nd Day Ai Same day if ordered by 1:00 PM EST 2 Business Days
Next Day Air Same day if ordered by 1:00 PM EST 1 Business Day
Next Day Air Saver Same day if ordered by 1:00 PM EST 1 Business Day by End of Day
UPS Standard - Canada Within 24 to 72 hours 5-10 Business Days

* Delivery dates are estimates only and can vary due to backorders, order processing delays, payment information, customs clearance, and various shipping delays that may be out of our control. Please refer to the specific product page which will show additional information, as some items may require additional shipping time or ship directly from our suppliers. After we receive your order, an order confirmation email is sent automatically from within our website which will show stock status for the item(s) on your order. Business days are Monday - Friday with Holidays excluded. When your order ships, we add your e-mail address into the UPS software which will send you tracking information, so you can track shipment status online, anytime! Here is a link to our complete shipping information including a UPS transit map: Click Here