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The Poret® Cube Filter: Simplicity that works!
The cube filter is simple: cubes of Poret® foam are glued with silicone onto an unglazed porcelain tile used as a base. In principle, you could use any stone or slate plate as a base but silicone sticks much better to a porcelain tile since it has the same properties as glass. Using slate plates proved disappointing because the silicone really does not stick to the slate long-term. I have used these now for over 5 years and raised thousands of fry of all kinds of fish using this filter. PVC pipes drilled on the side for the airline are used as a lift tubes, which are simply stuck into the middle of the foam block. Even better are the new B&H Cubelifter™, they work great with the cube filters. I don't use or recommend air stones because they cake much too quickly.
Here are the filter volumes for the different cubes:
| Model | Foam volume | Inflow area (outer surface) | Recommended for |
|---|---|---|---|
| 4" cube filter | 1 Liter (58 cubic in) | 75 sq in | tanks 5-15 gal |
| 5" cube filter | 1.95 L (112 cubic in) | 120 sq in | tanks 15-30 gal |
| 6" cube filter | 3.37 L (195 cubic in) | 180 sq in | tanks 30-50 gal |
| 10" tall cube filter | 5.62 L (396 cubic in) | 270 sq in | tanks 50-75 gal |
Compare that to:
ATI Hydro 1 0.33 L (19 cubic in)
ATI Hydro 2 0.32 L (18.5 cubic in)
ATI Hydro 3 0.65 L (38 cubic in)
ATI Hydro 4 1.08 L (63 cubic in)
ATI Hydro 5 1.61 L (93 cubic in)
It would take an ATI Hydro 4 to equal the 4" cube filter, while the 5" cube beats every Hydro-Sponge filter by volume and in performance. The large B&H Cubelifter™ can move up to 80-100 gal/h depending on air pump performance.
Poret® Cube Filters don't fall apart like other models on the market!
These are the best filters on the market. Try them! Here are some customer references.
Go here for convenient online ordering.
Even better are the new B&H Cubelifter™, they work great with the cube filters.
New: Make your own cube filter:
Cube materials are 39x4x4" strips that cut easily into ten 4" cubes. It takes the pain out of cutting large 4" sheets. The strips ship folded or cut in half. A very economical way to make your own cube filters or to replace worn out foam.
The ultimate 6" filters with large B&H Jetlifter™
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