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rocks overflowing the cups

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02-02-2009, 08:24 AM

garyc

Junior Member

Join Date: Feb 2009

Posts: 1

rocks overflowing the cups

Hi Ron,

I have a dumb question: the "gro-rocks" I have tried (both the expanded clay and pumice ones) float on top of the nutrient solution making it difficult to keep them from overflowing the cups. Is that normal, or are the "gro-rocks" in Arizona full of helium?
gary

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