I have the filstar, well two of them, XP-3's or what ever its labeled. The both work fine, wonderful product but, I have really stopped using them and my other canisters for their intended purpose. I use them to really just circulate the water now, I only have floss/media in one cartridge to collect only the large debris. I really find my HOB Marineland 400's to be really efficient. I also find them to be A LOT easier to clean as well. I am will be building another stand for my 150G and when I re-do that I will not have any canister on that one when I get it done. I really think IMO the HOB along with a power head or two is a better option. I am very fond of the Marineland Emperor 400 and the Aqua Clear HOB's