Oak trees and pools: like hair and chewing gum

[PoolDoc]

+ 100 - 200 acorns in fall
+ many small twigs (pin oaks shed them)
+ pin oak leaves high in tannins can stain your pool

Here the US FS page: http://plants.usda.gov/factsheet/pdf/fs_qupa2.pdf

Trees with acorns and oak leaves go together with pools, like hair and fresh chewing gum. You'll be getting very skilled with a hand vacuum and a leaf net.