Living Rock


Reefing newb
does anyone know of a guideline for calculating how much living rock I might need?
I am about to setup a 28 gallon (UK) marine tank, and I'd like to know how much living rock I am likely to need.
Thanks for your help.
about a 1.5 pounds per gallon(your tank 42 pounds)you can save money and get some argonite rock(same calcium base as live rock) for you base and good quality live rock on top the live rock will seed the base rock.Try this website for description of base rock
It should seed in a few months.The deal is that since this rock will be under the live rock it wont get as much light so coralline algae will not grow.The same goes with live rock berried under other live rock will become base rock.