I have a hundred pounds (Marco Pukani dry rock) think from my 225 build in '08 as well as a couple boxes of Walt Smith Fiji from '06 and a big shelf rock piece. I did an acid dip 6 years ago or so after shutting down the big tank. Volume wise it's more than a 55gallon drum full. It has been in a drums of saltwater with a skimmer on it. It gets the water change water from my 100g. Phosphate reads 0.07 on my Milwaukee photometer. $300 for all rock, pick up in Fullerton. Pictured is just the Marco rock when I got it(yard stick in pic). Was going to save it to go up a Big tank but decided only on a 180g and have enough Tonga rock for it.