Two breeding questions, bettas and convicts

So for my betta's I basically followed this guide http://joshday.com/howtobreedbettafish.htm Have the female in the glass chimney and the male on the outside. It has been almost a week and the male has been harrassing the female from the outside ever since I put him in. Occassionally I see him under the cup but so far no bubble nest, or not even anything that looks like hes starting one. However as far as the female goes she has shown the stripey pattern associated with breeding, and has been facing head down and is very fat. I assume she is ready and waiting for the male to squeeze the eggs out of her.

Does it usually take a male this long to build his nest? and I am just being really impatient?

But more importantly how long will the eggs last in her before they are no longer good and she dumps them?



The question on cons is what is the easiet way to sex them? Ive heard the orange spot or so but how noticable is it? If someone can post a pic of the difference I would really appreciate it.

Thanks

Well the female has died. Have no idea why. She definitely was full of eggs. My girlfriend had the male for about a year I am just "borrowing" him. So dont know how old he is. Im going to try and get another female and see if he likes him more. We will see.

As far as the convicts I have three and two have small orange spots but you have to look hard. The third is the bigger of the three and he constantly chases them.