The sponge filter consists of a cubelifter and a poret foam sponge (10, 20, or 30ppi) that is glued with silicone onto an unglazed porcelain tile. These foam filters won't clog quickly or fall apart like other sponges. The poret foam that the sponge filter is made of is specifically manufactured for aquarium use and has a much larger inner surface than other filter materials (about 1800 sq inch per quart of volume), which permits more rapid and superior growth of bacterial cultures.
Available in 4" cube, 5" cube, 6"
4" cube filter - Foam volume 1 Liter (58 cubic in) - Inflow area 75 sq in - for tanks 5-15 gal
5" cube filter - Foam volume 1.95 L (112 cubic in) -Inflow area 120 sq in - for tanks 15-30 gal
6" cube filter - Foam volume 3.37 L (195 cubic in) -Inflow area 180 sq in - for tanks 30-50 gal
10" tall cube filter - Foam volume 5.62 L (396 cubic in) - Inflow area 270 sq in - for tanks 50-75 gal
I have been visiting the swisstropicals.com site for nearly a year. Their inovative yet simple filter designs have really impressed me enough to try their Poret Cube filter with a Jetlifter. The Poret Foam comes glued to a tile base which provides a really stable foundation. This filter is not going to topple over. The other amazing inovation is the Jetlifter which eliminates the need for airstones or multiple lift tube attachments. The airline connects to the Jetlifter which appears to be European PVC via a device with many small perforations like the top of a salt shaker. Since I just received the filter I am not able to give a complete review. I am apprehensive about how the foam is glued to the Tile base and how easy it will be to clean or replace the foam. I will post a review in about 3-6 months of use.
Addendum 1/12/13: Well, it has been about 6 months since I began using the Poret Cube Filter with a large Jetlifter. The Jetlifters are beyond awesome with the use of a professional pump. Even if you are using the biggest diaphragm pump commonly available at most pet stores, they will not be strong enough.I use a Jehmco with a 15L/min as compared to a Fusion 600 dual outlet pump. The fusion turned all the way up can barely push any water but the Jehmco pump pushes a lot more water. With that said the Jetlifter has a phenomenal output with a concervative estimate of about 100g per hours. The filter is not so hard to clean after all.
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