http://www.the-jmcc.org/clam-shell/
if i use a kids clam shell pool for my ducks to swim in does the water need to be cleaned regularly?
ive seen some of the states of the swimming areas they use on farms and am curious as to weather they would get sick from it.
I do use one and the water is changed every day
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 Shell Clam $9.99 
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1965 Buick Riviera Clamshell Headlights
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