are these rocks safe?

[jworth]

i just pulled two rocks off of the bank of a nearby lake. what do i have to do to make them safe for my fish?

 

[bigspizz]

Boil them.

 

[jworth]

thats all i would have to do?

 

[bigspizz]

Also pour vinegar on them. If they fizz (calciferous) do not use. If nothing happens, use.

 

[Ullopincrate]

I agree. sound advice.

 

[ThaDude]

PH down works too, a little better i've found.

 

[rallysman]

Spizz is on it


Just out of curiosity, what lake did you get them from?

 

[andyjs]

Yep, any acid works for the rocks. It might help if you scratch the rock a little bit to make sure the minerals in it are exposed to truly see if it fizzes

 

[jworth]

it does not fizzle when vinegar is put on it. so now just boil it?

rallysman, it is a lake off of 300 and fortville pike. not sure what its called. pretty big though. collected some d-wood too.

 

[jworth]

this is also a 25 pound rock probably. thats pretty heavy. i have a shallow sand bed. is this a terrible idea or what?