Rocks ok ?

[robert2191]

Hi i have found these rocks that I would like to use but I don't know what they are called and do not know if they will be safe for my tank

If anyone can identify them and let me know if they would be safe to put in would be great
Thank you


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[Tim Harrison]

It's difficult to tell for sure, but I'd hazard a guess at some sort of limestone. Try pouring some vinegar on one of them and if it effervesces then limestone it is.
Limestone is safe to use in your tank but it may dissolve and raise TDS.
However, it's not necessarily a problem if you're going to do regular water changes. Quite a few limestone types rocks are popular hardscaping materials because of aesthetics e.g. seiryu stone.

 

[robert2191]

Thanks
I have poured vinegar on it did not seem to do anything


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[dw1305]

Hi all,

i have found these rocks

Robert where do you live? That would give us a bit more idea (assuming that they were from "the wild").

cheers Darrel

 

[robert2191]

I live in Middlesborough and i got them from a fruit & veg shop
When the dig their veg up and find rocks they sell them cheap so I thought I would get some


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[cooling]

Hi Robert ,
Put them in a bucket of water PH test the water then wait 24hrs and test the water again to see if any PH changes .

 

[robert2191]

Hi Robert ,
Put them in a bucket of water PH test the water then wait 24hrs and test the water again to see if any PH changes .

Thanks iv put them in the water but gone away for a few days so will check the water when i get back


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