OASE has engineered specific filter systems to provide the OASE Clear Water Guarantee (CWG). Using a CWG filter system we guarantee you will be able to read the 1" marking on a tape measure when the tip is submerged to a depth of 3 feet.
A filter system consists of:
- A pump to feed the water into a filter
- A filter that ensures biological and mechanical cleaning
- A UVC clarifier to clean the green out of the water
Filter Sizing Charts
In-Pond Filter Systems
for small ponds. In-pond filters include 3 nozzle choices for appeal and added aeration.
Pressure Filter Systems
for small ponds. In-pond filters include 3 nozzle choices for appeal and added aeration.
Flow-Through Filter Systems
for small ponds. In-pond filters include 3 nozzle choices for appeal and added aeration.
4 Steps to a Clear Water Guarantee
1. Determine your pond volume:
For circular ponds: Pond volume (gallons) = diameter (ft.) x diameter (ft.) x depth (ft.) x 5.9
For rectangular ponds: Pond volume (gallons) = length (ft.) x width (ft.) x depth (ft.) x 7.5
2. Determine the fish load:
The more fish in the pond, the higher the nutrient load and the larger the filter system should be.
LIGHT - Planted ponds with few or no fish
MEDIUM - Planted ponds with 10 in. of fish per 100 gallons of water or less
HEAVY - Planted ponds with koi or 20+ in. of fish per 100 gallons of water
3. Choose the correct filter system:
Use the filter system chart to determine the appropriate filter system for your pond.
4. Install and maintain the filter system:
Install the CWG products per installation instructions. Clean the filter as needed and replace the UVC bulb annually.