Water Flow Controller for Betta Fish Tank, Water Change Pouring Diffuser for Aquarium, Efficiency Water Filling Accessories (Black)

Where do I start?!This comes with a bowl and the stick to mount to the aquarium wall that keeps it from floating away. What a genius idea! Start by mounting the stick with the suction onto the inside of the aquarium wall. Place suction end a bit lower than the waterline. As you fill the aquarium the bowl floats up. After use just remove the bowl and stick. This is perfect! As you can see in my video I have aquatic plants and it's quite annoying when the water moves all the gravel and plants around. This did not do that AT ALL!! I'm so happy to find this. I have a pretty small tank, 5 gallons so it seems pretty big for my tank but it works perfectly. I'm sure this works for any size tank. What a time saver. I love this. Definitely worth it