i dont use any chemicals either, cept for rootone, because it has fingicides in it and keeps the seeds from rotting if they take unusually long to germinate...
also, the seeds u are using may not be good...
if buds are harvested before the seeds ripen, none of them will germinate...
so unless u bought ur seeds from a trusted seed bank, it's very likely your seeds are not viable and will never germinate no matter wat u do
seeds should be big and a brownish dark green color, sometimes with a little white around the edges... the best ones are completely brown/green and have black stripes on them, that means they ripened on the bud goood and long and have the best chance of germinating...
if ur seeds appear small and white, or a light green color, they prob arent ripe and never will be...
a good test is drop them in a bowl of water, if they sink theyre good, floaters are dead...
sometimes even good ripe seeds can go bad if they are too old, because inside the seed coat the embryo has a limited water and food supply... if it is too old of a seed, the water will leak out of the seed and the embryo will dry out and die, or it will simply run out of nutrients to kee[ it alive...
so if that happens, then even the good lookin brown seeds will float becuz they ran out of water and just have a dry embryo and some air in em
and yea, dont use any chemicals... seeds/seedlings are very sensitive to chemicals and can easily be killed by them... i just soak them in distilled water or rainwater for 8-12 hours, then i dry them off, dust some rootone on them, drop them on a paper towel, spray the seeds and the paper towel with a spray bottle of distilled water, and then put the wet paper towels with seeds on them inside a cool whip tub and put in a warm, dark place...
i usually get 90-100% germination with this method, far better than the 75-80% that most people claim. unless the seeds were unripe, which is usually the case when u find seeds in a bud that u smoked... then u get zero or very close to it germination... and if any of them DO germinate, they will be small and weak and probably wont survive...