We have an approx 17,000 gallon in ground pool. Inevitably, despite best efforts, grass from the mower finds it's way into the pool. I try to remove it with the pole/net attachment, but the grass is often so fine that it passes through the net. The two skimmers obviously won't keep small blades of (a lot) of grass from making its way to the filter, which contains four, 4 ft cartridges.
Aside from removing the cartridges every month and cleaning them, is there any other way to clean the grass out of it?
Second, how often should the cartridges be replaced? We're now entering or third year using the same filter cartridges.
By the way, this is not a salt water pool.
Thanks for any advice!