normal for astrea snails to hang out at water line?
my params are fine, but i always find at least 2 of my 3 astrea snails at the water line half the time. is it possible there isnt enough air in the water.
the temp is 76F
penguin 330 as a power head
my clowns, shrimp, and nassarius snails all seem fine.
FWIW the astrea dont touch the algae anymore
"Atrocities are not less atrocities when they occur in laboratories and are called medical research."
George Bernard Shaw