Check the listing for details. Ista Vortex Water Flow Accelerator 1/2" for Tropical Fish Aquariums. Condition: New. Listed at 15.29 USD. Ista Listing is for ( 1 ) : Ista Vortex Water Flow Accelerator 1/2" I-821 The Vortex Water Flow Accelerator created by Ista will increase the water flow in your aquarium by up to 400%! This easy to install device, which is also known as a penductor by hobbyists, improves circulation, adds fresh, oxygen-rich water, and pushes debris and particles towards your filtration source! This Water Flow Accelerator includes a flexible ball socket neck, allowing you to control and direct the water movement. Your fish will enjoy swimming in the current produced by it, as it offers them the slight resistance that can be found in their natural habitat. 1/2" dia. x 6.25" H Water pump sold separately. NOTE : WATER PUMP NOT INCLUDED Certain images and/or photos used in this template are the copyrighted property of JupiterImages and are being used with permission under license.