The water level was about an inch above where the bottom of the net pot is, ive lowered tank levels to bet a about where the net pot touches the water. Haven't but H2O2 in to the root zone yet, wont that kill bacteria? Is there a safer dilution % of H2O2 that can be used in lieu of the 29% (diluted from 35%)? I can't use cheap pharmaceutical 3% H2O2? I don't want to burn the roots by accident if the hydro strength of it as a cleaner is so caustic that I need gloves to handle it. Also, will this kill root zone bennies like microbes, bacteria, and fungi? The roots themselves look nice and stringy with mini branches but some have dirt/pellet clods stuck to them. Not sure what it could be, but before I go down the peroxide path, just want to make sure I'm using the right strength for the right purpose. No aquarium smell that I can tell of. Just smells like nutes.