Was wondering when this needed to be done?
I am currently in the middle of a SLAM and it came to be that I don't think any maintenance work had been carried out on the sand filter in atleast 5 years.
What is the general rule of when to replace the sand?
I am currently in the middle of a SLAM and it came to be that I don't think any maintenance work had been carried out on the sand filter in atleast 5 years.
What is the general rule of when to replace the sand?