Hydrogen Peroxide 29% Technical Grade
Hydrogen Peroxide or H2O2 has been a common additive used in hydroponics for several decades. It is simply water with an extra oxygen atom attached. While this may sound innocent, H2O2 is very powerful and comes with many risks.
On its own water, or H2O, is a very stable molecule, but sticking an extra oxygen onto it makes for instability. This means it is very reactive and can spontaneously decompose into water and oxygen.
Plants and animals produce hydrogen peroxide under their normal metabolic functions. Since it is potentially highly toxic and reactive, plants and animals are well protected against it by having enzymes known as peroxidases that can break it down quite quickly. On the other hand, many types of microbes don’t have this ability and this gives us an advantage to exploit! Low concentrations of hydrogen peroxide can be harmful to microbes, but since plants can break it down, they’re immune. At a 29% concentration, plants can be fed a 1-2 mL per liter nutrient solution of hydrogen peroxide.