so the canister will be in the tank?
what do you plan to use for media for mechanical/bio? i could see using a big sponge
like the ac110 sponge for mechanical and ceramic rings for the bio
i would keep in mind cleaning the filter, if its to hard to brake down your gonna hate this thing.
im sure it will filter the tank well. the idea is sound,
just make sure you can service it!
looking at the design the canister would have to be well seal in order to have the flow leave via the spray bar vs the lid, or shoot back out through the intake
great thread btw