What rock is this.

[neocyber_16]

What type of rock is this?

 

[Kingkole]

is it quartz mabye?

has it been in a fish tank for a while?

 

[neocyber_16]

is it quartz mabye?

has it been in a fish tank for a while?

Actually i found it outside and haven't put it inside the tank yet. I put it inside a bucket of hot water and am going to do the vinegar test (once i find where i last put the vinegar.)

 

[kingkong]

i dont no what it is but it looks fine ( hope u find the vinigar )

 

[Doby_the_Dojo]

i think it is safe, to my knowledge ( haha knowledge ) it is used in some gravels, particularly the "natural" color