My Experience with Peroxide , wiping out the entire tank over night.

[LadAShark]

Does the ocean run peroxide?

Apparently, yes

Hydrogen peroxide in deep waters from the Mediterranean Sea, South Atlantic and South Pacific Oceans - Scientific Reports

Hydrogen peroxide (H2O2) is present ubiquitously in marine surface waters where it is a reactive intermediate in the cycling of many trace elements. Photochemical processes are considered the dominant natural H2O2 source, yet cannot explain nanomolar H2O2 concentrations below the photic zone...

www.nature.com

Degradation of hydrogen peroxide at the ocean’s surface: the influence of the microbial community on the realized thermal niche of Prochlorococcus - The ISME Journal

Prochlorococcus, the smallest and most abundant phytoplankter in the ocean, is highly sensitive to hydrogen peroxide (HOOH), and co-occurring heterotrophs such as Alteromonas facilitate the growth of Prochlorococcus by scavenging HOOH. Temperature is also a major influence on Prochlorococcus...

www.nature.com

https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2013JG002483

Peroxide is also part of the natural response many living things have to pathogen: https://en.m.wikipedia.org/wiki/Respiratory_burst

Conversely some organisms are thereby resistant to peroxide because they produce peroxidases and catalases which help them resist peroxide.

 

[LadAShark]

For the people that use peroxide regularly - my impression (from a chemistry perspective) - is that H2O2 reacts quite quickly to form Water, Oxygen, as well as some free radicals. Can any of you see a situation where lets say you have 2 clown fish in a bare tank with no activated carbon, etc - that you could cause gill injury with a full dose of peroxide.

You would need a spectacularly high dose for the peroxide itself to be causing an issue. https://humble.fish/community/index....87/#:~:text=How It Works:,fish to a new tank.

 

[Lavey29]

Apparently, yes

Hydrogen peroxide in deep waters from the Mediterranean Sea, South Atlantic and South Pacific Oceans - Scientific Reports

Hydrogen peroxide (H2O2) is present ubiquitously in marine surface waters where it is a reactive intermediate in the cycling of many trace elements. Photochemical processes are considered the dominant natural H2O2 source, yet cannot explain nanomolar H2O2 concentrations below the photic zone...

www.nature.com

Degradation of hydrogen peroxide at the ocean’s surface: the influence of the microbial community on the realized thermal niche of Prochlorococcus - The ISME Journal

Prochlorococcus, the smallest and most abundant phytoplankter in the ocean, is highly sensitive to hydrogen peroxide (HOOH), and co-occurring heterotrophs such as Alteromonas facilitate the growth of Prochlorococcus by scavenging HOOH. Temperature is also a major influence on Prochlorococcus...

www.nature.com

https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2013JG002483

Peroxide is also part of the natural response many living things have to pathogen: https://en.m.wikipedia.org/wiki/Respiratory_burst

Conversely some organisms are thereby resistant to peroxide because they produce peroxidases and catalases which help them resist peroxide.

Yes and as Randy stated it's far less in quantity then what is typically dosed in tanks.

 

[LadAShark]

Yes and as Randy stated it's far less in quantity then what is typically dosed in tanks.

Doesn't change the fact that it's present in nature and that our aquariums are not oceans and have shortcomings that must be dealt with via mechanisms we simply cannot naturally.

 

[Lavey29]

Doesn't change the fact that it's present in nature and that our aquariums are not oceans and have shortcomings that must be dealt with via mechanisms we simply cannot naturally.

Never used it never will and my tank thrives. To each his own.