I'm looking to add filtration to my 160 gallon tank and I'm on a tight budget. Through my research, I've found that the fluval 405 cycles 340 gph and the aquaclear cycles 500 gph. That doesn't seem right though because I would obviously assume that the canister filter is more efficient. The prices are a big deal too. I can get 1 fluval filter or 2 aquaclears for cheaper. Do the aquaclears actually work better and they're cheaper and its just whether or not I can deal with the filters being seen? Or should I spend the extra money and get 1 fluval?