Every year
of course. you should change your sand every 8-10 years. use a shop vac to get it out.
When you say sand, I take it you mean in the sand filter. Yes, normally change the sand or clean the DE filter when we change the liner since it most likely has been some time since it was changed..
A good way for getting sand out of a sand filter is to get a sand venturi with this attached to the end of a garden hose you will be able to suck all of the sand out of the unit easily. Check with your pool shop as they may be able to sell, hire or lend one to you.
Less maintainance with sand you just backwash, and change sand every four years. Cartridge filters clog and have to be taken out and cleaned often. Use sand it is hands down a better system.
how do you clean jacuzzi sand filter, and replace sand
distinguish between slow and rapid sand filter
Yes. After several years the sand begins to round out like river stones and become less effective. It can also become caked with oils, calcium and other debris from the pool. How often you need to change the sand in your filter will depend upon different factors such as running time, water chemistry and filter size. A good rule of thumb is to change it about every 3yeats. When you empty the old sand from the filter, that is a good opportunity to check the laterals and other internals of the tank for wear and tear.
Nothing if its a sand filter However if sand is coming into the pool from the filter then you may have to replace one ore more laterals in the sand filter as they have worn and are letting sand through to the pool,
This is fairly easily achieved change over. All you have to do is change piping coming from the pump and to the pool to fit into the new filtration system.
Do you mean how do you install a sand filter?.
Need to rephrase question.
I just had change my sand filter and it seem working fine, but it doesn't have enough suction at the skimmers, why it does this?