I've used these classic Eheim filters for years and love them. You do have to start a siphon from the tank but that's easy. The in-line on/off valves makes this easy. It also makes cleaning them a breeze. Once running these filters are silent and do a fantastic job.
The instructions for this pump are not very user friendly if you have not had a canister before...like me. I do not recommend this item for novice or low intermediate aquarium owners. Must be advanced. Wish I could send it back since it is useless if you can't get it primed. I love Chewy, however. I also have been all afternoon cleaning up a flood because I didn't realize the pump was still pumping white disconnected to it's tubing.