The reason I said LR first was because, I read somewhere that the base live rock needed to be placed on the tank bottom not on the sand, or does it matter? I went to the other LFS in my area today, lol , just around the corner from the house, I didnt find it till after I bought the tank, not complaining, the other store is good and I got a good deal. Anyway, I was talking to him about ordering alittle more LR, I told him I already had 100 lbs ordered and that I didn't know how far that would go in my 125g tank, I told him I didn't know what 100lbs of LR looked like. He told me,lol lol, that 100lbs will cover one corner of the tank, so I ordered 40lbs more of Figi cured LR and 30lbs of something he called, Vanuatu LR, told him I didn't know what that kind was, he said its nice, Ill take his word for it, lol , probley get the shaft, again. Anyway, both orders from the two stores will come in next Thursday.