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Penetrates algae cells with UV light, destroying their ability to multiply and causing flocculation.
Filters heavy sediments like leaves, blanket weed, and fish waste using brushes.
Filters smaller debris and allows beneficial bacteria to grow on its surface.
Filters suspended particles through layers of reticulated foam (Green, White, Blue).
Provides surface area for beneficial bacteria to break down pond pollutants (ammonia, nitrite).
Ensure the mains electricity supply is disconnected before any installation or maintenance.
Identifies wire colors for Live (Brown), Earth (Green/Yellow), and Neutral (Blue) connections.
Guidance on extending the unit's cable using a suitable 3-core cable and waterproof connector.
Warning against looking directly at the UV bulb when switched on due to potential eye/skin damage.
Instructions for removing algae and limescale deposits from the quartz sleeve.
Recommends UV lamp replacement every 12 months or 8000 hours for optimal performance.
Steps for disassembling the unit to access and replace UV components like the lamp and sleeve.
Water entering the overflow indicates the media requires cleaning.
Remove and wash brushes in pond water to clear heavy debris.
Rinse Bio Cartridge media in pond water; avoid thorough cleaning or drying.
Clean foams in pond water, refit them in order before they dry.
Clean Flocor media in pond water if removing accumulated silt, preserving bacteria.
Open the drain valve until the water runs clear for a quick de-sludge.
Connect a hose to the connector, open the drain valve, and turn on water for a full de-sludge.
The Oasis Clear Pond Filter is a comprehensive filtration system designed to maintain a clean, clear, and healthy pond environment. It addresses various pollutants such as unconsumed fish food, decomposing vegetation, and fish excrement, which, if allowed to accumulate, can become harmful to fish. The system utilizes a multi-stage filtration process, including ultraviolet clarification, mechanical filtration, and biological filtration, to remove toxins, reduce algae growth, and provide good quality water.
The filtration process begins with Stage 1, the Ultra Violet Clarifier (U.V.C), located within the lid of the filter. As water is pumped through this unit, algae cells are penetrated by U.V.C light, which destroys their ability to multiply and causes them to flocculate (bond together). This process creates larger particles that can then be more effectively removed by the subsequent biological filter. The U.V.C is designed to clear the water within 2-4 weeks and also provides a mild sterilizing effect to help reduce harmful bacteria levels.
Following the U.V.C, water enters Stage 2, the Mechanical filtration stage. Here, heavy sediments such as leaves, blanket weed, and fish waste are filtered from the water as it passes through a series of brushes located in the first chamber. This initial mechanical filtration helps to remove larger debris, preventing clogging in later stages and ensuring the longevity of the finer filtration media.
Stage 3 involves further Mechanical/Biological filtration. In the second chamber, the water passes through a Bio Cartridge. This media is designed to filter smaller debris that was not collected by the brushes in Stage 2. Crucially, the Bio Cartridge's surface also provides an ideal environment for beneficial bacteria to grow, contributing to the biological filtration process.
The final stage, Stage 4, combines Mechanical/Biological filtration in the middle chamber. This stage features three layers of reticulated foam, each with a different grade: Green Foam (Course Grade), White Foam (Medium Grade), and Blue Foam (Fine Grade). These layers effectively filter out suspended particles as water passes through them. Below these foam layers, the system incorporates Biological Media called Flocor™. The primary purpose of this media is to provide a large surface area for beneficial bacteria to grow and mature. Once matured, these bacteria break down harmful pond pollutants like ammonia and nitrite, converting them into nitrate, which is then naturally absorbed by pond plants. This comprehensive multi-stage approach ensures thorough cleaning and detoxification of pond water.
The filter is designed for permanent installation and is not submersible. It must be positioned where it cannot be accidentally knocked into the pond or waterfall. For optimal performance, all fittings must be watertight, and the correct size outlet pipe should be used. The filter should be sited on a firm, level base, with its outlet positioned higher than the water surface of the pond or above the height of a waterfall, if one is present. It is recommended to keep the filter as close to the pond as possible. A suitable size and length of hose should be attached from the pond pump to the filter's inlet and secured with a hose clip.
For continuous biological filtration, the unit must be run 24 hours a day to maintain the bacteria colony. It is important to note that the biological media will take approximately 3-6 weeks to fully mature. This maturation process can be accelerated by using Oasis Filter Active, if desired.
The unit is manufactured in the EEC and conforms to CE Regulations, ensuring a standard of quality and safety.
Regular maintenance is crucial for the optimal performance and longevity of the Clear Pond Filter. The system is equipped with an overflow system; if water is seen entering the overflow, it indicates that the media requires cleaning.
For cleaning, the brushes in the first chamber should be kept reasonably clear from heavy debris. These should be removed and washed in a container of pond water. Similarly, if the Bio cartridge appears clogged, it should be removed and rinsed in a container of pond water. It is important not to clean the media too thoroughly, only enough to remove large solids, and never allow the media to dry out, as this can harm the beneficial bacteria.
The foam layers should be removed individually and cleaned in a container of pond water. Tap water should be avoided for cleaning the foams, as they contain beneficial bacteria that can be damaged by chlorinated water. The foams should be re-fitted in the correct order (dimpled side uppermost) before they dry: Green Foam (Top Layer), White Foam (Middle Layer), and Blue Foam (Bottom Layer).
The Flocor™ media typically does not require cleaning. However, if accumulated silt needs to be removed from the tank, the Flocor™ media can be removed and placed into a container of pond water while the tank is cleaned, which helps preserve the beneficial bacteria.
The filter includes a quick de-sludge feature. Stage 1 involves simply opening the drain valve until the water runs clear. Stage 2 allows for connecting a garden hose to the hose connector, opening the drain valve, and turning on the water. This process does not require removing the media, as water passes underneath it, thereby preserving the beneficial bacteria.
For U.V.C maintenance, the quartz sleeve may become fouled with algae and limescale deposits over time. These should be removed using a suitable cleaning agent, taking care not to scratch the quartz surface. The UV lamp must be replaced every 12 months or after 8000 hours of use, even if it still emits a blue light, as its UV-destroying capabilities diminish. An Oasis UV Maintenance Kit, which includes a replacement lamp, 'O' rings, quartz sleeve, and cleaning cloths, is available.
When performing any installation or maintenance, especially involving electrical components, the mains electricity supply MUST be disconnected. The power supply should be earthed and fused at 3 amps. A Residual Current Device (RCD) MUST be fitted to the mains supply. Never look directly at the U.V bulb when it is switched on, as the UV light can cause damage to eyes and skin. The unit is supplied with a translucent hosetail that glows when the U.V is working, providing a visual indicator. When re-assembling the unit, all fittings must be watertight, with particular attention to the end caps, which should be hand-tightened but not overtightened.
General| Activation | Automatic |
|---|---|
| Filter Life | 6 Months |
| Operating Temperature | 40-100°F |
| Type | Water Filtration System |
| Filtration Capacity | 18000 Gallons |
| Operating Pressure | 30-100 psi |
