No worries bro, just don't want you wasting your money as great white shark is not cheap stuff! Here is what maximum yield says "
Hydrogen peroxide should not be used in conjunction with beneficial microbes. Hydrogen peroxide is used for various purposes in gardening. H2O2 adds oxygen to water, lower algae levels and can help suppress diseases within plants. It helps sterilize water and growing medium to kill harmful microbes, but it will also kill the good biology."
I think your back on track though so good save