Introducing a beach rock to community Tank, suspected limestone

[tommymacc]

What you guys think. I want to put a big rock in my tank.

 

[Brookster123]

It will most likely mess with your ph, pour some vinegar over it, if it fizzes than it will jack your ph up..

 

[tommymacc]

Yea I scalded it, and left it soaking in hot water all week, changing it every day. I put vinegar on it. Nothing happened. My PH is a little low according to the strips. Maybe it will up it a bit