name suggests a trickle filter spills water through the filter media
as it cleans the water. Like other aquarium filters they rely on
biological filtration as their main cleaning method. They differ
from most aquarium filters in their large surface area and water
Trickle filters and their variations are known by a number of names;
canister filter, sump filter & baffle filter to name a few.
This is one of the more expensive types of filters you can buy from
your local fish shop. Making your own by following the steps in this
simple plan can save you a lot of money.
In this DIY trickle filter you will use a bucket for the main
chamber. You will
build this trickle filter
To do the same job as this: (A commercially available & expensive wet
& dry trickle filter)
Go to the Hardware store and buy a bucket $10. Drill a hole
in the side of the bucket, about 2 inches (5cm) from the bottom.
(to allow for a sludge sump). Cut some wide diameter plastic PVC
pipe so that you can stand them in the bottom of the bucket and
mount a grill on it (put some cuts in the end that wil be the
bottom), I use that white plastic checker mesh for the grill.
The grill needs to be just above the hole you made.
Now fill the
bucket with a media of some description, I have used scoria
rocks here but have since up graded to Bio-Balls because I got
them cheap. Cover the scoria/Bio-Balls with a circle of filter
wool. The schematic diagramme (below) shows the basic
construction of the filter.
Above view of the filter, showing scoria & filter wool.
Next is the lid and spray bar set up. The most expensive part of
your filter will be this bit. (The spinner) You must mount the
spinner into the centre of the lid
Other than some end caps, the rest is just pipe. The photo
shows an exploded view of the spray bar assembly.
This is what it should look like (the lid & spray bar
assembly) when assembled, I have cut holes in the lid to assist
gas exchange (no idea if it helps or not *shrugs*)
That's it, water goes into the top and comes out the bottom!
Stand the bucket in a deep plastic tray, put your pump and
heater in the tray (careful not to have the heater touching
plastic!) and your up and running.
This article was written by Mark Coleman for his
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