This is a very interesting article and it makes me think of a new concept...
Just as we continuously dose to our tanks all the necessary building blocks to grow coral (Calcium, carbonates, major elements, trace metals, amino acids, etc) perhaps we should also continuously dose all the necessary building blocks to grow a healthy bacterial biofilm (Organic carbon source, nitrate and phosphate).
We've always taken the growth of bacteria for granted but perhaps we need to regard a healthy bacterial biofilm to be an active feature of our tanks (even though we can't see it) and treat it, feed it, and maintain it as such.
Some aquarists have an excess of nitrate and phosphate but I have to dose nitrate daily and phosphate occasionally to maintain measurable levels. I suspect that one or both of these bottoming out along with an in-tank cipro treatment may have been the cause of my LCA.