Why not ... native gravel/sand has the two of the best reasons for use
in the aquarium ... it's free and it's plentiful :). As long as no
harmful foreign (toxic) matter accompanies the substrate it should be
excellent .. it works in the natural environment doesn't it ? :)
OBTW, it should look very attractive as well.
Stay well,
Leo
************************************
Laissez Les Bon Temps Rouler'
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