5 gallons is going to be too small. I'll wager you grow out of it rather quickly.
I'm building a new 5 gal rubbermaid mashton. Rather than buying a false bottom, I've opted to use 1/2" copper pipe. Do
They normally say bottom, but I have to agree with TwoHeads. That’s a nice clean set-up he has. There are a lot of us using braided strands and they allow filtering from all sides.i drill holes in bottom, top, or side of pipe, what size holes. and how many?