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C.A.S.T. - New approach to particle filtration in reefkeeping |
Silent and powerful particle filter for sump systems
Advanced trapping of mainly particulate organic matter (POM) is almost not considered in daily reefkeeping practice. Nevertheless, the powerful pre-filtration makes seawater not only crystal clear, but also reduces the amount of biologically decomposable matter in the system and subsequently lowers substantially the pollution of seawater by ammonia, nitrites, nitrates, phosphates and other unwanted compounds. |
C.A.S.T. - Cascade Autonomous Solid Particles Trap
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Key advantages: |
C.A.S.T. consists of following parts: |
- Easy assembling and maintenance
- See-through design for quick check
- Silent operation
- Selectable filtration grade
- Fit-up washable filtration materials
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- Multi-purpose adjustable holder
- Multi-purpose plug-in chamber
- Removable ladder with 2 filtration pads
- 2 pieces of 100% cotton gloves
- Operating instructions
Optional accessories available. |
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Purpose of Prefiltration - Example: |
Even a part of POM is being removed by skimming in almost all reef tanks the role of prefiltration is irreplaceable: |
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Let’s say the production of POM (Particulate Organic Matter) in average tank is 5 - 20 µg / l / day and let’s suppose 500 l tank with return pump of 2.500 l/h flow rate. This results in following: |
Time period |
Volume of water
passing through filter [l] |
Volume of tank
exchanged |
POM produced [g] |
| Daily |
60.000 |
120 x |
2.5 – 10 |
| Weekly |
420.000 |
840 x |
17.5 – 70 |
| Monthly |
1.825.000 |
3.650 x |
532 – 2.129 |
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Without any prefiltration, up to 2 kilograms of POM will each month:
- Partially decompose and pollute the tank with ammonia, nitrites, nitrates, phosphates and other dissolved unwanted matter.
This situation requires powerful nitrification-denitrification technology and intensive phosphate removal
- Partially create sediments which could initiate unwanted anaerobic processes in “dead” zones of the tank
- Lower the transmission of light through water, affecting negatively coral photosynthesis
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Multi-purpose Holder & Chamber |
Multi-purpose adjustable holder |
1 - Sump mount arms
Allow holder vertical adjustment 0 - 15 cm in five 3 cm steps. Each arm is mounted on the holder by means of 2 dogs and 2 M6 plastic bolts.
2 - Chamber holder
The holder consists of following parts:
- Transparent cover
- Front product name plate
- 2 chamber guiding slots with fixation bolts
3 - Multi-purpose plug-in chamber
See further... |
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Multi-purpose plug-in chamber |
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1 - Left & right openings for:
- closure or
- overflow ring or
- cascade connection tube
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2 - Adjustable water outlet tube
- adjustable both horizontally and vertically
- fixed by means of M3 plastic bolt
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3 - Pump mounting slot
- Optional - product-specific. Inner diameter 13 mm
- Pump fixation by means of M3 bolt
- Enables pump orientation in 0 or 180 degrees angle
- Ready for air pump connection
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C.A.S.T. |
Product Scheme |
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1 - Water inlet
2 - Adjustable water outlet tube
3 - Filtration ladder |
4 - Closure
5 - Overflow ring
6 - Optional cascade connection |
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C.A.S.T is not equipped with any pump as it should be connected directly to the main tank water outlet. Water outlet tube or hose is freely inserted into the top opening of the chamber holder cover.
Inner design of C.A.S.T. chamber and filtration ladder ensures low-noise water flow. Two openings on both sides of the chamber enable two or even more chambers connection into the cascade. Cascade connection can be very useful in following cases:
- Very high water flow rate between main tank and sump causing an overflow if only one unit is used
- Filtrated water contains large amount of particles causing fast clogging of filtration fabric
(Highly populated fish tanks for instance)
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Filtration Ladder |
C.A.S.T. offers on basic level two filtration materials:
- SF-01-500: Standard filtration fabric
- 100% POP (Polypropylene)
- 305 X 100 mm
- Water flow capacity 2.000 l/h
- FF-01-300: Fine filtration inlet-side-melted fabric
- 100% POP (Polypropylene)
- 305 X 100 mm
- Water flow capacity 1.000 l/h
Filtration fabric is delivered pre-cut also as the spare parts. Both materials are fit-up and easily washable. Filtration fabric can be quickly exchanged or inserted into the chamber with the support of plastic ladder. |
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Optional accessories and spare parts |
PAD Filtration Ladder 257 |
Long-life PAD fine-filtration ladder as an alternative to the standard one. High-quality polyamide sieve is used instead of fabric filtration pads.
- Made of highly resistant polyamide fabric
- Loop size 257 µm (~0,26 mm)
- Water flow capacity ~ 1.500 l/h
PAD filtration ladder is extremely easy to maintain and can serve for years if not mechanically damaged. |
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3+3 Filtration Pads |
Set of spare filtration pads for standard filtration ladder:
- 3x SF-01-500 (305 x 100 mm)
- 3x FF-01-300 (305 x 100 mm)
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