The was using the white one by itself for a while and it was working really well. I didnt have to do much modifcations to them to get them to work like a regular canister. They are pretty cheap compared to a canister filter. The white one was like 20 and the clear one was 30. They have differnet types of filters that are made for them. Im using a carbon one and a wooven one. I made a spary bar, some what, for the outtake in my tank. I was supprised how much water flow im getting with it. Im going to take some really good pictures monday night. I might make a differnt type of intake. I want to make one with a surface skimmer.