Aerating My Soil Using Hydrogen Peroxide

Hello,

I want to reuse my old substrate. This is basically full rescaping in a year old tank. However, the new stem plants failed to developed roots or even if it grow roots it is unhealthy with dark color. I think the substrate become anaerobic because there's bubble coming out of it when disturbed. The soil is not compacting & only around 1.5 inches deep. So the question is can I aerate the soil using hydrogen peroxide to oxigenate it?

 

Thank you for clearing that up. I think I may misunderstand when reading about anaerobic condition in the soil & H2S. That's make a lot of sense because in my other tank which have ticker soil, plants there did not have root growth issue.

Everything are the same, the lighting, the substrate, the type of plants & my fertilization regime. This puzzled me because I was successfully grow the same plants in the same tank before for more than a year.

My first suspect was fertilization but even after I changed my dosing schedule & dosage, I don't see any improvement. Right now, what I'm seeing are the old leaves are damaged, like necrosis maybe. I thought the old leaves damaged like that because the root is not growing. Also the new leaves show sign of iron deficiency, light green color with dark vein. I'm using same ferts too, I don't understand why iron deficiency. Can lighting cause these symptoms that I'm seeing? I'm using same lighting but maybe the intensity may have reduced?

 

Little update. Poor water condition causing issues that I'm having.