Zebra Rock raising ph and GH?
I've notice that the water in my 20 gallon shrimp tank is harder than my tap water. Upstate NY's tap has 12 degrees hardness, and my aquarium water is steady at 14-15 with weekly 25% water changes.
Does anyone know whether or not Zebra Rock raises pH and GH? I don't have any HCL, and I don't trust my white vinegar test (which did not bubble.)
Has anyone tried this? I'm assuming the rocks do raise pH, but what about GH?
edit: My aquarium pH is actually ~6.8, compared to 7.6 out of the tap. This confuses me even more. Could something in my aquarium be raising GH but lowering pH? All I have is a couple smaller Zebra Rocks and 4 pieces of driftwood that have been soaking for months now.
Last edited by Primetime Rob; 09-30-2009 at 12:44 AM.
Reason: pH information