Hip, I think I agree with you here.  Kinda.  Bleach is well documented (thank you) and although newish, not advanced.  But I don't think this is very advanced either.  These comments are off-topic though and unimportant, just wanted to side with you so you know you have friends around here

My opinion is that peroxide is not going to be very useful as a means to get around air exchange.  I just don't see enough power behind it's decomposition to really remove co2.  Even if it is at high concentrations, I don't think the effect would last long enough to really matter.  And so far as it adding oxygen, in a terrerium, co2 levels are the problem (measured in ppm), not ratio of co2 to oxygen (which is mostly what peroxide decomposition would alter imo).  A related a well covered subject IMO.

A more applicable effect of peroxide is in a scenario where oxygen itself (or lack thereof) does matter.  Preventing anaerobic areas.  Anaerobic is by definition lack of oxygen, and is more common the more water is around.  Anaerobic conditions do favor many contams, and harm mycelium.  In other words, peroxide itself protects perlite from bacterial and mold spores, while the oxygen produced by it's decomposition will keep conditions unfavorable to any living anaerobic bacteria.  Same in a grain jar which is too wet, anaerobic bacteria quickly get a hold.  But a peroxidated grain jar can have more moisture in it because the oxygen produced prevents anaerobic conditions.  Interesting, but documented and not advanced.

and Shmoppy, I think this:

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I know that H2O2 is a common chemical, and as such, most if not all organisms have developed enzymes to decompose it.

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But, if one used H2O2 agar for long enough, could senescence happen in such a way that it became acclimated to the presence of H2O2?

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