If you really want to grow your own seeds, buy a 2x2 tent that’s designated as a pollination chamber. Buy 20 high quality, regular, photo period, seeds. Grow them to maturity, keeping track of growth patterns and valuable traits. Take the very best male and female and introduce them to the pollination chamber. Grow them through flower to harvest in the same chamber while hand pollinating whenever sacks burst. By harvest you’ll have fat buds full of seeds and you’ll know they’re genetically strong.