Here is the rock that came inside one of the bottles to prove it's viability. The tank this went in is 100% clean dry rock with no seed rock for the exact purpose of keeping stuff like this out.
Here is the exact description of the product:
"Though heavily inoculated with beneficial microbes, Coralline Algae in a Bottle (unlike seed material scraped from someone else's rock) poses no risk of introducing pests or parasites."
Here is the exact description of the product:
"Though heavily inoculated with beneficial microbes, Coralline Algae in a Bottle (unlike seed material scraped from someone else's rock) poses no risk of introducing pests or parasites."
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