When you have a hot tub you also need a filter.
The filter cleans the water of all the unwanted particles that always end up in your hot tub.
Such as dirt, algae, bugs and leaves.
That's why you need to find the right hot tub filter for your needs.
Diatomaceous Earth Filters This type of hot tub filter is usually made from a gridded mesh.
This mesh is covered in a layer of diatomaceous earth.
The diatomaceous earth is like glue.
All those unwanted particles get stuck on it.
The diatomaceous earth is actually crushed bones.
If you had it under a microscope it would look like a sponge.
This hot tub filter is a "Green" filter, for those trying to go green.
But there are strict rules when it comes to changing or cleaning the filter.
Sand Filters In a sand filter there is gravel and dirt.
When the water passes through it the gravel and dirt capture all of the larger unwanted particles.
But, the small microscopic particles do not get caught.
There are things you can use to make all the small particles clump up so they can be caught in the sand filter.
There is a special sand used in these filters, and every so many years you will have to put more sand in the filter.
Cartridge Filters These are very common filters.
They are the most widely used.
Cartridge filters are made of dacron mesh.
The dacron mesh is pleated in the filter.
All of the pleats allow more of the unwanted particles to be captured, and thus removed.
With cartridge filters there is a large amount of material used to remove all of these particles.