Sand finds its way into your pool by blowing in returning through your pool lines from your sand filter and by riding in on your swimmers. If you think this might be a problem for you plastic is the way to go.
Sand is a common enemy of the swimming pool owner.
How to get sand out of an above ground pool. For best results sweep the sand into a pile and then use the vacuum to remove the pile rather than attempting to vacuum the entire pool floor. This will give the tank enough water to clean the sand and get the pump functional before you start filtering your pool water. It seems the ground surrounding the pool stays pretty damp from all the water splashing out.
Adding the plastic before the sand and the rock is a good way of keeping the grass away from the pool. If sand particles get inside an above ground pool they must be vacuumed out. In ground pools are not the only pools that require the use of sand filters or pumps.
Sand is removed from a swimming pool using a vacuum system. Fill the tank with water up to the level of the sand. Sometimes even above ground pools use these filtration styles to keep the pool water sparkling.
Vacuuming creates a suction and takes the water out of the pool. The pump ensures that the water circulates through the filter which removes fine particles. A pump and filter team up to remove fine debris from the pool water.
The filters typically are filled. Use a garden hose to add water to the tank until it just begins to cover the sand. This damp ground is perfect for growing vegetation.
Remember that when used to vacuum water you need to remove the dust filter inside your shop vacuum.