The Planted Tank Forum - View Single Post - How do I find out if a certain rock is raising my water hardness?

honor · 05-08-2008, 03:19 PM

i think you put a dab of vinegar on it and if it starts to bubble or foam after awhile then it's leeching minerals into your water.

05-08-2008, 03:19 PM	#2 (permalink)
honor Planted Tank Obsessed (View User Tanks) PTrader: (4) Join Date: Apr 2008 Location: Los Angeles California Posts: 379	i think you put a dab of vinegar on it and if it starts to bubble or foam after awhile then it's leeching minerals into your water.