I got the 2 Odysseas set up today. I REALLY like them a lot. 1 of them went on a 75 g with an 8" Goldfish and 4 Dojo Loaches-they're having a blast in the flow. The other went on a 100 g RedEared Slider turtle tank replacing a 320 gph Catalina canister (Eheim knockoff). They move a lot more water than I was expecting. The hoses are huge-1" ID but each is only 4' long. If needed I suppose you could always get hose at the hardware store. It fit fine on the 4' and the 5' long tanks I put them on. It says 500 gph but the outlet flow looks as strong as my FX5 canisters. You could easily slice a section of one or both of the sponges out and put media stones in there. Or even take 1 of the sponges completely out and put net-bagged media in there. Doing the latter would increase the flow even more.
I've got my FX5's on Oscar tanks. My precious Oscars
If not for that I might've tried the timer idea. It sounds like a good idea but I really need strong filtering 24/7 with the Oscars. I'm planning on buying 2 more of these Odyssea canisters just to have because I like them so well. And for $58 total you can't hardly go wrong.
I've got my FX5's on Oscar tanks. My precious Oscars