Are these rocks safe?

Montelboom

Plecostomus
MFK Member
May 20, 2014
542
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Maryland
The best way to test is if you pour vinegar on it and if it fizzes up it would be a rock that can raise your ph.
 

Montelboom

Plecostomus
MFK Member
May 20, 2014
542
69
61
Maryland
No problem
 

Evz jardini

Jardini
MFK Member
May 19, 2010
4,761
591
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42
manchester /uk
The best way to test is if you pour vinegar on it and if it fizzes up it would be a rock that can raise your ph.
Good advice :thumbup:

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