DIY Large canister filters
Chris asked about the large canister filters that I talked
of earlier this week and wanted to know a bit more. He
uses the 200 litre sized ones, filled with spun plastic
mat type material that is about 4 inches thick that is
commonly used for trickle filters. It is rolled up and slid
into the barrel. The unit sits below the tank, fed from an
overflow with a prefilter. The PVC inlet pipe is connected
to the lid of the barrel, with the outlet on the side of the base.
The outlet feeds a small Onga pool pump that pumps back
to the tank.
His pond uses a similar system, but uses three barrels
connected one after another, the final one being filled with
sand, having a network of PVC pipes inside like a
conventional pool sand filter.
He primarily grows plants, but has Aussie and Papua-New Guinea
rainbows in them aswell. He did use metal halide, but has just
switched to 6700K flouros. BTW- his plants are just wonderful.
On another tack, Sydney Aquarium use PVC sewer pipe and
step down fittings for their canister filters, each one costs about
AU$5 in all, and they use them in great quantities. They have
screw on fittings and can be removed, cleaned out and replaced
in about five minutes. Much cheaper than the commercial
Marque APD - ANGFA(NSW)