so as i was setting up my canister filters on my 360 gallon tank I was wondering if there was a down side to using pvc make one giant filter out of multiple canisters. I want to make the outlet one giant spray bar across the whole top of the tank. I figure if i could put valves at the all the points where a canister connects to the system I can take them off for maintenance as needed. I have right now 1 FX5 and 1 405 running my tank right now I have another 405 to add if needed. I for see the benefits being an even distribution of return water to the tank as well as a cleaner looking system using canisters. what other benefits do you see and what are the down sides.