dude, i would imagine the shit your GF has to do hair with has all kinds of chems your clones wouldnt agree with in it, stuff like conditioners and shit so it doesnt fry hair. i definetly would not use it
and its my humble opinion that h2o2 should be used for cleaning and disinfecting only unless you have bigtime funk problems in your media or rez. i think that h2o2's benifits as an oxygenator are mediocre at best compared to a pump and airstone. h2o2 has dispersed all the oxygen it can after about 10-12 hrs and is broke down into water, where a pump runs constantly. it also kills benificial bacteria and fungi.