Clear Water Guarantee

Clear Water Guarantee

The OASE Clear Water Guarantee (CWG) addresses and resolves the top issues pond owners have: »green water and maintenance time«

When a pond owner uses specifically marked CWG products, they are guaranteed to have clear water and minimal maintenance.

We guarantee that when a tape measure is placed vertically into the pond to a depth of 3 feet, the water will be clear enough to read the 1 inch mark at the tip of the tape measure.


How the Program Works

  • Choose the correct CWG products based on pond size and fish stocking level 
  • Register the products online at
  • Install the CWG products per the installation instructions
  • Perform the recommended maintenance
    • Clean the filter as needed
    • Replace the UVC bulb annually

Choosing Your Products

When used properly in conjunction, these products qualify for the OASE Clear Water Guarantee.

1. Determine your pond size

2. Determine the fish load

3. Refer to the charts below to determine the appropriate products for your pond

Flow-Through Filters


Pressure Filters


After you’ve made your purchase of carefully paired Clear Water Guarantee products, be sure to register by filling out the application below.