We are changing the sand in our filter. Should there be gravel in with the sand. The old sand we are pulling out has gravel. Should we add the gravel back in with the new sand? Thank you.
gravel in sand
We are changing the sand in our filter. Should there be gravel in with the sand. The old sand we are pulling out has gravel. Should we add the gravel back in with the new sand? Thank you.
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