geridoc Well-Known Member May 24, 2007 #2 Yes...and no. Copper will not kill all of the bacteria on/in your rock, so it is still lr. The copper will kill all of the invertebrate hitchhikers that are living in the rock, probably causing an ammonia spike and a cycle.
Yes...and no. Copper will not kill all of the bacteria on/in your rock, so it is still lr. The copper will kill all of the invertebrate hitchhikers that are living in the rock, probably causing an ammonia spike and a cycle.