i was researching on sumps today and was wondering if pvc piping is a must? i see a lot of ppl trying to figure out what size and placement of the pvc and once glued together if you mess up you have to start over again. do you have to use pvc or can you use hoses like the ones that come with canister filters. i know piping diameter is an issue but hoses also come in different diameters. i want to figure out a game plan before i begin building my own sump any information is appreciated.