Gravity Flow

Gravity Flow Filters

The advantage of the gravity flow filters is that they are generally inexpensive to purchase and install. All you have to do is put a pump in the pond and hook it up and you are filtering! It is that easy.

OASE Bio-Clear Filtration System

Cloudy, dirty water and algae are common problem

s in ponds. Floating particles due to an excessive supply of nutrients, dead plants, over fertilized soil, acid rain, fish excrement and left over food are the cause of these problems. The decomposition of these particles produce ammonia, which is harmful to all living beings. OASE’s unique Bio Clear Filter System transforms ammonia into nitrite using bacterial processes. The Nitrite (which is still harmful) is then changed into harmless Nitrate. Nitrate actually constitutes a healthy nutrient conducive to plant growth.

Another unique feature of the Bio Clear Filter System is the easy handling and cleaning. An indicator automatically gives the degree of pollution and shows when the filter needs cleaning. The filter is cleaned by simply removing the inner dirt tank, rinsing it with clear water, and reinserting it again. The temperature indicator and the Bio Clear - Plus-Zone, used for receivi

ng efficient additives, are additional, unparalleled, characteristics of this unique filter system.

NOTE: We advise you not to clean the tank and bio cartridges too thoroughly so that enough bacteria can remain in the filter to continue the decomposition of noxious substances. The efficiently of the Bio Clear Filter System can be easily increased by using a parallel connection of several tanks.

Warranty: If used properly, OASE gives a three-year warranty on the Bio Clear Filter System.

OASE Bio-Clear Filtration System - NEW Lower Prices!!!!

Model	Description	Max. Pond Gold Fish	Volume Koi	Max Flow Rate	Price
Bio Clear 5 P/N-88302	19.7” X 15.7” X 17.7” 2 - Chamber System	4756 Gal	2378 Gal	1450 GPH	$ 155.99
Bio Clear 10 P/N-88303	31.5” X 19.7” X 17.7” 4 - Chamber System	7662 Gal	3699 Gal	2650 GPH	$ 311.99

1) 1" standard threaded connection

2) Spray Aeration: Strong whirls of water in the inlet

supply the pond with air and thus with oxygen. This

is important for the biological efficiency.

3) Blue Zone: Course dirt particles are kept in the

voluminous blue bio-elements. Thanks to the

oxygen rich blue zone bacteria develop quickly and

transform ammonia (extremely dangerous to fish)

into nitrite.

4) Bio elements: The granulate has a large surface

and is ideal for an aerobic and anaerobic

decomposition of pollutants at the same time.

Harmful nitrite is decomposed.

5) Red Zone: Mechanical filtration, biological

filtration and lack of oxygen allow bacteria in the red

zone to decompose into nitrite. Nitrite can be

absorbed and decomposed by plants in a natural way.

6) Denitrification Zone: Thanks to water that is poor in oxygen; microorganisms change excessive

nitrate into harmless nitrogen.7) Dirt TankThe dirt tank is made of environmentally friendly

polyethylene. It can be completely removed for cleaning. The biomass is easily filtered out of the

pond water and kept in the tank.

8) Bio Clear-Plus-Zone: This system was developed specifically for introducing different materials

to the filter. These materials can be used to increase the ability of the fiber to eliminate phosphate.

It can also be used to add filter starter and other biological additives

9) Pollution IndicatorIf the filter system is operated for a long time a high concentration of biomass

may accumulate in the filter. A special system measures the degree of pollution and indicates when

the filter should be changed in order to guarantee maximum efficiency.

10) Temperature indicator: Microorganisms such as bacteria at a temperature of more than 50

degrees F. Water, which is too warm, may cause increased algae growth and eliminate the majority

of oxygen in the pond. The indicator shows you the ideal temperature for the pond and the

activity of the bacteria.

11) Double Tank: The tank is made of environmentally friendly polyethylene. It can be buried in the

ground of stay above ground as a stand-alone unit.

12) Filter Outlet

Call 1-888-551-4343 for quotes on all installations, service, maintenance, ordering, and consulting

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