Self Sink Weighted Aeration Tubing - 75 Foot length. Tubing easily attached to your compressor on one end and diffuser on the other end and will sink on its own no need to weight it down and hope it stays - IT Will! - we have more lengths available - need 50 or 150 or 300+ just let us know. You can tee off this line to add more diffuser's as well.We stock diffuser sticks, diffuser tubing, compressors, filters, and all replacement parts for any of your pond or lake aeration needs. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Ponds & Water Features\Pond & Fountain Fittings & Pump Parts". The seller is "diypondaeration" and is located in this country: US. This item can be shipped to United States.