fintuckyfarms
Mold/fungi, even adage can grow in only a couple days. But it sounds like your only concerned with with what may be on the
seeds before germination. If I'm not mistaken they soaked the seeds in a bleach or chlorine water solution before sprouting them for that reason in one of those videos I posted. I have also soaked seeds in H2O2 to kill pathogens and fungal spores on seeds. But in large quantities, bleach/chlorine would be much cheaper. After the seeds are sprouted there is still the possibility of contamination from airborne sources, even from the water supply if not filtered with a absolute one micron filter, or using chlorine/bleach before use. UV wont kill spores, but will kill the fungi once sprouted if subjected to it correctly.