i just sold some one on this board 85 lbs for 40 dollars,and they came and picked it up,,,when i baught it i thaught ill just put the tuffa on the bottom and pile live rock on top and around it ,and the tuffa will become live rock,well it didnt go down like that,,,live rock is live rock,and will usualy fade and comeback,etc,the tuffa in my tank has been there for 1 1/2 years and only has a couple of mushroom sprouts comming off,,,,,i was way pleased with my live rock purchase from marine depot and am ready to do it again and yank the rest of my tuffa out,,,as i like the look of live rock,,,granted my tank has been turbulant untill the last few months with a change from cc to dsb,,addition of sump,chiller,hallides/pc,getting rid of mech filt,but my on line purchase of live rock has been my best foot forward ,,,tuffa takes forever in my view to start any growth,,,if i did it again i would just order all live uncured fiji from marine depot