This is a Heavy Duty Aquarium Marineland Penguin 550 Powerhead as it pushes 145 gph (gallon per hour), with multi-use versatility. They are ideal for under gravel filters, water circulation, as well as custom applications.
If you have a customize setup this is the power head you want to consider. They are silent, safe and reliable as well as nicely priced. Get this as soon as you need it by shipping either air or ground.