Hi,
It was Jack Spirko.
He is the guy who runs housensakes.net and also this blogspot page.
There is also this forum - though you need to join to read it.
I only have a male so can't really help.
Have you thought about switching round the pairs? Just to see if you get any fertile eggs at all?
At least then you would have a proven fertile female to try the males out with the next cycle.
dr del