Thanks for checking out Reefing Concepts Anemone Guard for the Octo Pulse Line up. We feel that our guard is superior to our competitors for several reasons!Our Guard is made from 100% Reef Safe PETG Plastic Not familiar with PETG? It similar to the plastic water bottles are made from.Our Guard is a direct replacement for the factory guard, not a cover. simply twist off the factory guard and twist ours on. Done!Our Guard comes in two variations: Standard flow: a more focused flow similar to the stock OctoPulse GuardEnhanced flow: updated outlet design that redirects the output for wider coverageOur guard is made in the USA with plastic sourced in the USAOur guards are well built, competitively priced, and are backed by a company lifetime warranty for years of use.To purchase, simply select the size (octo pulse 2 or octo pulse 4) and the flow pattern (enhanced or standard) and add that to you cart! sold individually, stock guard shown for size reference.The fact is most of us don’t buy one of these guards for our power heads until disaster strikes and we loose a tank in habitants. Many times we don’t because the added cost is a deterrent.Reefing concepts has tried to balance the best of both worlds by making a cost conscious, sturdy solution to help make the protection more attainable.Another aspect most don’t realize is that when snails crawl into the bump and their shell hits the blades, that vibrating sound you hear is not only annoying, but its damaging your pump! Reefing concepts anemone guard addresses this issue with extra protective spokes on the output to prevent 90% of your cleanup crew from being able to crawl into the pump.