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

**mpodolan** · 05-09-2008, 02:07 AM

To be even more conclusive, use muriatic acid. Not all stones will react to the vinegar method. Using acid is the fastest and easiest, IMHO, but I do understand that most folks don't just have it around the house

05-09-2008, 02:07 AM	#4 (permalink)
mpodolan A work in progress (View User Tanks) PTrader: (58) Join Date: Mar 2007 Location: Lenox, MI Posts: 1,348	To be even more conclusive, use muriatic acid. Not all stones will react to the vinegar method. Using acid is the fastest and easiest, IMHO, but I do understand that most folks don't just have it around the house __________________ Mike 10" Cube 10g Shrimp tank 20g planted 50g planted