These Air Tube Diffusers are manufactured in the USA. They are designed to be a drop in system. The rubber membrane is wrapped around a hollow PVC tube. The air slots in our tubes are a little larger than other brands at 2mm long each. You get a medium size bubble which does not clog and puts very little back pressure on your system. Rated flow for the 12 inch tube is 1 cfm to 4 cfm. The rated flow for the 24 inch tube is 2 cfm to 8 cfm. The maximum flow is 7 cfm and 14 cfm respectively, for short duration. These tubes are commonly used in waste water treatment systems. Both size tubes only add an additional 12 inches of water pressure to your overall system pressure. This gives you a very low maintenance and effective aeration system.
You must add small stones to the inner tube to increase the weight so it stays put on the bottom of your pond or lake. A plug is included to keep the stones in.
The inlet connector is a 3/4" male pipe thread. We offer a 3/4"fpt x 5/8" barb connector so you can connect to our 5/8" sinking air hose.
To clean the rubber membrane, simply wipe with a rag and clean water occasionally.
USE A SINGLE 12 INCH DIFFUSER FOR HAKKO 40 OR 60 AIR PUMPS.
USE A SINGLE 24 INCH DIFFUSER FOR THE HAKKO 80 TO HAKKO 120 AIR PUMPS.
MULTIPLE 12 INCH DIFFUSERS CAN BE MANIFOLDED TOGETHER FOR THE HAKKO 80 TO 120.
We offer Free Shipping on orders over $59.00!* Read below to get all of the details.
*Just purchase $59.00 or more to receive free shipping to the lower 48 states. Your products will be shipped using FedEx, UPS or the USPS. All charges will be deducted during check out when qualified purchased item(s) are placed into shopping cart. If you can not wait for the free shipping you can always select a faster method during check out. Unfortunately the free shipping offer does not apply to koi.
In addition to shipping direct from USA Koi in NJ we also ship from several warehouses scattered throughout the US and have the ability to ship direct from many of the manufactures that we carry. If possible we will always ship your products from the closest available warehouse.