Why is my spa filter housing/filter face cracked or faded?

A spa filter housing is a container or casing designed to hold a spa filter. It is typically made of durable materials such as plastic or metal.

The housing is connected to the spa's plumbing system and serves as a protective enclosure for the filter. It also allows for easy removal and replacement of the filter for cleaning or maintenance purposes.

There could be several reasons why your spa filter housing or filter face is cracked or faded. Some possible causes include:

Adding undissolved sanitisers directly to the water. Some spa sanitisers can be harsh or concentrated. When sanitisers are added to the water without dissolving in a bucket prior, the undissolved chemicals can settle at the bottom of the spa or get trapped in the filter including the filter housing.

Over dosing of sanitisers. Spa sanitisers can be corrosive and damaging to the spa equipment, including pipes, filters, and heaters. Overdosing can accelerate the wear and tear of these components.

Using pool chlorine or floating bromine dispenser. Pool chlorine is typically made for larger volumes of water. The concentration of chlorine in pool chemicals is much higher than what is required for a small spa pool. Using pool chlorine or floating bromine dispenser, in some cases, can result in excessively high levels of chlorine in the spa water which may damage the components of your spa including the filter face.

Not keeping the cover open after a dose of chemicals to allow ventilation. Chemicals used in spas, such as chlorine or bromine, can release fumes that can be corrosive or damaging to certain materials. When the spa cover is closed immediately after adding chemicals, these fumes can get trapped inside and cause increased wear and tear not only on the filter housing but on other components like jets, seals, or surfaces.

Age and wear. Over time, the materials used in the filter housing or filter face can degrade due to exposure to chemicals, UV rays, and water. This can lead to cracks and fading.