calculate the water volume of your tank.
get a filter that has a flow rate of about 3 times your tank volume.
you can use pvc pipes but do not that pvc is inflexible. so you'll need to spend some time designing your piping layout. and you'll still need some soft tubing for connection to the canister fiter. water valves are ok but only use the outlet valve to control flowrate.










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f3="budak"]I have seen the uncles at Bioplast (System Control LFS) making DIY filters using PVC pipes/tubing and large capacity Eheim pumps, which they sell for 5ft or larger tanks. Maybe you can go and have a look??[/quote:1a7183

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