Review on Aquatic Life Pre Filter Replacement Cartridges by Joy Vogelzang

The high pressure fittings on these filters are plastic, threads can fail. O-rings in the cartridges are rubber, they can fail. They only give you cartridges, no replacement o-rings or fittings. You can buy a new device for $7 more than that very listing, but they won't even send you the items that wear out over time. I'm really disappointed, for $45 I expect cartridges, diaphragm and cartridge o-rings AND flimsy, brittle plastic fittings PRE-INSTALLED onto the cartridges. You need to improve your game or inform customers about the device replacement. Honestly this kit is a waste of money, I had a small leak in two places even though I did everything 100% right. Take my advice and just buy a new device. End of the story.