You can use a non-aluminium based flocculant to assist in clearing the water.
These can be messy, and if the directions on the bottle are not followed exactly, it can cause your pool to go cloudy or murky while bringing everything together and dropping it to the floor for vacuuming.
Naked Pools recommends Lochlor products 'Miraclear' and 'Ultra Kleer 2 in 1' rather than flocculant. These may take slightly longer to clear up the pool water but are much easier to manage and have less impact on your equipment like the filter and pump.