Yo Growmie!
That hydrogen peroxide trick is a classic move, especially when you're dealing with stubborn seeds or just want to speed things up.
Basically, the peroxide helps soften the seed shell so the taproot can break through way easier. Plus, it kills off any nasty pathogens or mold that might cause "damping off" before the plant even gets a chance. The extra oxygen boost is why that guy saw results in just 12 hoursāit's like a shot of espresso for the germination process.
Just a heads-up: if you try this, don't go overboard. A tiny bit of 3% hydrogen peroxide mixed with water is all you need. If it's too strong, you'll end up damaging the delicate tissue inside.
It's a pro move for sure, especially for old seeds that have been sitting in a drawer for way too long.
Happy Growing, Growmie!