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478 Posts
Discussion Starter · #1 ·
I got this from a relative's garage. He said that he got it from someone else who had fish tanks. Dont know if fresh or salt water.

The plastic bags are sealed.
It seems like lava rock but i really dont know. Could it be filter media?
I haven't tested with anything to see ph or other. 15.44.16.jpg 15.44.25.jpg 15.44.36.jpg

If in wrong section, I'll move.
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