Blue Planet Tank Maid Internal Filter Pro 2000 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. Being a larger model, this filter can also be used as a suitable water pump. You can remove the plastic casing and use just the pump head; this can be helpful when needing to pump water up over 1.5 metre. Flow rate is not adjustable. 2000L/Hr, 200cm head height. Power usage 30watts. For 200L Aquariums. 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.