I picked these pavers off the side of the road and thought it would make a great cave for my RTC. If I soak for a couple of days will these be safe for my fish tank? I'm not sure what these kind of pavers are made out of, but I know concrete is not good (which is what I think the large piece is made of). If anyone knows for sure any input is great.
Are these pavers safe for my fish tank?
- Thread starter FreshyNut
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