Above handle, below opening with screw thread

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Above  handle, below opening with screw thread

In order to keep the water in the spa clean and to pursue a good water quality, you should definitely filter the water. The more the water is filtered, the better the water quality. 
During the filtering process, the water from the jacuzzi passes through the filter and the dirt sticks to the filter. Filtering alone is obviously not enough to ensure optimal water quality. In addition to filtering, you need to maintain the water level with chlorine and pH. 

How often should you replace the filter?
This depends on various factors. Are there many trees near the spa? Do you go in the water a lot? Is there a jacuzzi party? 
But our golden tip is: The more you change the filter, the better your water quality. 

Darlly filters at the top, threaded opening at the bottom
The Darlly spa filters are of very strong and good quality material. Because of this they are since a long time the number 1 producer of cartridge filters in the whole world. These filters can be used in different brands and models of spas, jacuzzis, hot tubs, massage baths and bubble baths. Take a close look at the properties of the filter, as there are hundreds of different types. 
The filters on this page have a handle at the top and a threaded opening at the bottom.