just pitching in as a guy who purposely purchased large pukani rocks, like 5 years ago when they where still availably. By large i mean they where like 20-35 pounds rocks, once i did my aquascape, i think i only saved 3 rocks in its original form, the rest where broken into smaller rocks to finish my scape. 3 years later i actually wish i had got smaller rocks and made scape with more curves and holes and arches for fish to hide and also being able to plant more corals on it.