Keep in mind that "going BB" means more than just removing sand.
In order to have a successful BB tank (long term, especially for SPS growth) you will need to also upgrade your skimming (wet skimming) more than with "typical" sand tanks.
Also, you will need more flow directed at the bottom of the tank. The flow should keep detritus from settling, and push it towards your overflow so the detritus can be removed by the skimmer or siphoned out in settling portions of your sump.
Also, you will need to siphon out any settled detritus from the display tank. Since your rock is not cooked, it will be "shedding" a lot of matter in the coming months as it attempts to "purge" itself of the built-up organics.
Siphoning, strong skimming, and strong current to keepo these organics in suspension is the true working mechanism behind BB; not just a lack of sand.
These principles are very very important to the BB theory, and without doing them, your BB experience will not be a fun one; trust me.
