i have a sand filter
ive been noticing some sand accumulating on the bottom of my pool
i havent beeen using the pool much, havent been in in a month
so its not someone bringing it in with them
ill vacume it up and it will be right back there the next day after the pump has been on
ive had the house for 2 years, pool has been running for 3-4 months say
i dont know how old the pool is or how long the filter has had its current sand
should i change out the filter sand?
should i not worry about it?
should i change it out first thing in the spring after i open the pool, as its getting close to closing now?