Sounds like what is happening he is getting some stuff that had a hermie flower pop up late in flower, giving you guys feminized seeds. If you are looking to get a make, just order some regular (non-feminized) seeds and the ration should be about 50-50.
When hermies pollinate (self pollination) the seeds dont become feminized, They have a higher tendency to become hemies themselves
lol... this is exactly what I'm talkin about on this forum.. people who can't read.
No where is he asking about how to make feminized seeds.
the veg nutes should work. if you read jorge cervantes grow bible (i thinks were it talks about seeds). it says a seed bank (dutch passion i think) did some test and tells you how to get more females/male..high nitrogen promotes more males, high P-K promotes more females. ( now dont go bruning your seedlings be smart about it)...also temp has something to do with it too..ill get back with better info.
There is also a thing called gibberellic acid. That will also do it. But you will need somebody that knows more than me about it to find out how to use it.
good luck