all it will do is kill anything nasty that the seed shell is harboring.
remember there is many ways that work fine to hatch seeds. just because it is not your way does not mean it is BS. any way that works well for someone is just as well as any.
{edit} I don't mean to sound like a dick, sorry man, just some constructive criticism.
i`ve cracked 1000s and you are telling people that bleach is good for seeds because it is available in nature for natural seedlings? I call it BS.. I love the "natural way".
the problem is that people put seeds into soil or other "NON-STERILE" mediums. This is what causes seed rot, bacteria in the medium AND usually high temps. Heat mats usually heat up the medium to 80f-90f, this is perfect for rotting your seeds.
You are telling people to put bleach on their seeds and not addressing the bacteria concerns of the medium. Do you think that is smart or call it BS? I put seeds in steamed and sterile coco fiber.. Never bleach or h2o2, never any rot.
If it's not in nature's perfection, I call it BS.
seeds will often rot in 90f temps, and in poor-bacteria enriched, non-aerobic conditions. You can use bleach or h2o2, they will still rot. Anything water-wet will hold 100,000,000x more bacteria than something which is dry.