EHEIM air200 Aquarium Air Pump, 200 L/h

I have owned the Eheim 100, 200 and 400 air pumps for 4 years now, and I love the Eheim brand simply because of the German engineering quality. I own their external filters, air pumps (100, 200, 400) and multiple other products. Their products never fail to impress me. These Eheim air pumps are clearly excellent quality. Very durable with a rubberised feel, can be wall mounted, have individual and adjustable air outlets, and are very quiet compared to others on the market. I simply always put a piece of under-tank foam underneath them just to stop vibration noise on the tank cabinet. Quietest air pumps I've ever bought; I would buy again if needed. Eheim is a great quality brand, so they will probably last me years, to be fair. These are powerful air pumps, not weak like some others. Some people say they are not quiet, but no air pump will be 100% quiet, and hence I always put my air pumps on some foam (fish tank base foam, for example) to reduce vibration noise. If you put an air pump on a hard surface, i.e. wood or glass, then you will get vibration noise. I have mine in my tank cabinet and don't even know it's on, it's that quiet. You will hear more noise from the air bubbles in the tank than from the air pump. I honestly cannot hear it at all in a quiet room with the TV on low. Would highly recommend this air pump and the Eheim brand in general. I love German engineering, as you always get good quality products. TIP: Do not forget to buy decent non-return valves to prevent water siphoning down the airline tubing into the air pump, i.e. if the electricity goes out (this prevents flooding, potential electric shock and fire). A cheap must-have item for anyone with an air pump. Safety is a must when dealing with water and electrics. Also, don't forget to buy airline tubing. It comes with approx. 1 metre (just over 3 feet) of airline tubing, but that may not be enough for everyone, so just measure and decide if it will be enough. Comes with a diffuser (two with the 400), which is adjustable so you can make bubbles bigger/smaller (I personally don't use these myself), but there's nothing wrong with them.