Here is my 2 mos. old experience w/ BB. I don't think BB has any roll in PH swing at all. It best to run your skimmer wet b/c all the detrius running down from the DT. I just blow all the trap detrius to one corner when i do WC. I can place or adjusted my Vortech where ever or however strong i wanted to. The bottom will look bare and unnatrual at first but now am starting to have some coraline on the bottom already. I can always add sand later if i don't like the BB look anymore.One of the cons so far is i can't add any sand dweller in my tank. You can always add more LR in the DT or the sump for more bio-filtration in place of sand.You 're welcome to come over and check out my tank anytime.
Reefing is just like cooking, all the ingredients have to be just right , except you don't have to bring the water to a BOIL...