<< I have observed over 60
years of pond maintenance that water lilies do not seem to like circulating
water.
Perhaps because they like cool roots and warm leaves. >>
On further thought and reflection, it may not be the temperature gradient,
but the actual temperature, since a circulated, below ground pool (where I
observed lily decline) will be cooled by the ground temperature at the depth of the
pool.
Lee Harper
Media, PA
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