Pi H2O2 29% Hydrogen PeroxideHydrogen 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