Wow that's a huge jump to say that some bacteria might be resistant to it's likely ok to use it with bens. Bad advice.
Lol. This is simple, if you want beneficial bacteria and you want to run H2O2 run the benes first, begin adding a small amount of H2O2 each day increasing it a little more until you reach the desired amount. Having said that, a well balanced nutrient solution makes benes a pretty pointless endeavor anyways. My point is that you can allow bacteria to develop resistance and if you think they can't you are mistaken.