I am setting up a 46 bow front reef. So far I have a 100 Seaclone skimmer, 150watt heater, 30lbs sand plus 25lbs live sand. I would like info. on how much live rock to use, I found it to be expenisive $6.00 lb. Any suggestiions where to buy some reasonable price? Also, I need infor on how...