Folks, if you've recently upgraded or renewed your annual club membership but it's still not active, please reach out to the BOD or a moderator. The PayPal system has a slight bug which it doesn't allow it to activate the account on it's own.
for about 100g of water, you can "have" about 1/3 of the rock would looks great in your tank.
BUT, make sure your rocks are fully cured before you add them in your tank, if they are not cured, I would say on the safe side, add about 7-lb or so at a time.