It means how many pounds you want on the website.
I personally have not ordered any of BRS 's rock yet but those that have love it, specially the pukani rock.
I will be starting a group buy today or tomorrow for BRS and the rock will go on sale for sale next week during the group buy so if you are gonna get any I suggest ypu join the group buy and save some cash! lol
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.