Aqua One Aquis – 550/750 Hose Tap Set Inlet /OutletThe Aqua One Hose Tap Set – Aquis 550 750  Replacement Tap Set designed for: Aqua One Aquis 500 Series 2 Advance Canister Filter / CF550 Aqua One Aquis 700 Series 2 Advance Canister Filter / CF750 Aqua One Spare Part Number – 11797   Be careful when tighting the taps, do not over tighten as this can break the tap and cause it to leak. Keep a spare set of taps on hand in case your current one leaks during routine filter maintenance.