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Look up in the sky! It's superoxide
>"This is really interesting about hydrogen peroxide production - sounds like
>my research. I bet it really isn't the peroxide - it is superoxide which
>does the job. Algae would not have the mechanisms to fight the free radical
>damage the way us higher organisms and plants do."
Same goes for ozone too(?).
Redox values can be controlled using this ORP meters/controllers and I never
had algae but I also didn't keep plants back then much.
I think high redox's can be achieved with a chemical method like O3 and
H2O2, but the bio method is better. Straw is a semi-bio method. The real bio
method is back to those 3 old things: CO2, light and nutrients. Manage your
tank well, keep these levels in a good range you'll have high redox's and
little to no algae.
My quick test using H2O2 to halt algae(slime that covers the glass and GW)
has not been going as good as hoped. GW backed off some(70% or so) but it
doesn't prevent algae IMO. Green slime covered the glass after one day.
CO2/light/exact nutrients -for my 20 gallons were maintained for each
tank(one a test tank and another a control base). Now it could be done more
scientific but I think there's more to it than meets the eye. H2O2 alone and
raising levels using this chemical in the *short term* doesn't seem to be
the whole picture by a long shot.
The biological process/cycle still seems to has a firm grip on this issue
IMO. The inorganic parts are not the whole picture here IMO.