Blue Planet Tank Maid Internal Filter Pro 1000 The Blue Planet Internal filters sit inside your aquarium, they contain sponge and charcoal, but you also have the option to fill with noodles and other filter media. Attaching airline to the outlet of the filter will draw air in creating a stream of bubbles from the filter. Flow rate is not adjustable. 1000L/Hr, 110cm head height. 100L Aquariums. Power usage 15watts. Available in a variety of sizes to suit different species and tank size Great for removing excess dirt or additional filtration when you have large fish that are starting to outgrow their current home.