I superglued my Buce on rock. Why do you plant them in the substrate and go through the transition to stick them to hardscape later. Mine are slow grower and even though they are thriving and sprouting new leaves and flowers, older leaves got minor bba on edges. I have to dose Excel and spray with peroxide in WC.
The main reason is because im actually more interested in filling the land more so than the hardscape tbh...
If the landscape works out in say 6-8months time then i may use buce clippings for the hardscape to finish off the look, since once superglued or even tied down it will take a bit of work to re-arrange everything if i get more plants or discover i like the colors of one more than the other for certain areas...
About the bba, i noticed in my low tech tank my buce has probablem with BBA as well, in my high tech though, maybe due to the balance of ferts / lighting etc, i've managed to keep algae at bay for the most part off the buce by dosing excel just in water column...