Hi there, maybe this is a silly question but I am curious to get some ideas on this:
Does live rock have a lifespan whereafter it will not perform the required function in a tank system and if so how frequently should one replace the rock in a system?
I have heard that 5 years is a reasonable time for fresh rock to be useful for, anyone had a tank for longer than that without changing any of the rock?
I look forward to your replies on this one.
Thanks
Steve
