H2O2 has seeped into the substrate granules so what plants do not get nutrients no more - all that it gets is H2O2! unfortunately the soil cannot be recovered anyomre as aquarium is a captive system and once an imbalance comes in it's gone i'm afraid. Changing the substrate and starting all over is the only option left now.
this is the first time i heard this, i thought h2o2 is only oxygen and water, so how is that possible, i know that it will kill the bacteria temporarily, but i doubt that substrate is no longer useable. this was a newly setup with ada soil, been like 3 months, now do i really need to waste more money?
also h2o2 does not last very long in the water once you add it to the tank