US and Canadian customers, see terms for shipping rates.
For all other countries, please,
Email me first to receive a shipping quote for your order.

The Cornerfilter is among the most effective filters for aquariums since it is a sleek descendant of the Mattenfilter. The large internal volume and intake surface, the ease of maintenance (essentially none), and the long lifespan of the Poret® filter foam make them superior to other filtration methods.

NEW: Standard Size Cornerfilters

For installation instructions goto Library-Cornerfilter.

Cornerfilter layout


Halfmoon-Filter is double the cost of a cornerfilter of the same size. Note: I do not supply the glass pane in the middle of the halfmoon filter as plate glass is difficult to ship. Good sources are Ace hardware or many local glass shops, they can cut it to size and sand the edges. For up to 15″ tall tanks request so-called double strength window glass (1/8″) and for larger tanks use 1/4″ glass.
Halfmoonfilter layout

Cornerfilter options

1.5” Poret® 6.5” wide. Braces are spaced 4” away from corner.

2” Poret® 7.75” wide. Braces are spaced 5” away from corner.

2” Poret® 9.75” wide. Braces are spaced 6″ away from corner.

3” Poret® 13” wide. Braces are spaced 8″ away from corner.

Glass Braces:
Braces are made out of plate glass (3/16″ for small/medium or 1/4″ for large) with sanded edges and one corner trimmed off to accommodate the silicone seam at the bottom.

For custom size ordering, please:
1) Measure the inside height from the glass bottom to the underside of the plastic frame.

2) Email me the tank size and the inside height measurement, as well as which color and porosity (PPI) you would like.

3) I quote you a custom Cornerfilter for your tank with Jetlifter™, Poret® foam, glass braces, and optionally a 10.1 oz tube of silicone ($8.00; fits standard caulk gun).

4) I send you a PayPal invoice for the order, which you can pay with PayPal or any credit card.
Silicone GE I

I use GE Silicone I All Purpose 100% Silicone GE012A, which is compliant for incidental food contact under FDA 21 CFR177.2600 “Rubber articles intended for repeated use.”

Last modified: January 24, 2020 at 6:19 pm