If the eggs are fertilized they should be fine and hatch for you. Of course there are usually a few white ones that dad may have missed so don't get discouraged.
The bubbler under them will keep oxygen rich water moving over the eggs. 50% water changes everyday will see you with wigglers in 3-4 days. Although with warmer water they will hatch sooner

I Have used methalyne blue in the past and I guess I got lazy and somewhere along the way quit. Doing daily water changes i think will be enough but the MB won't hurt.
What I was told by an angelfish breeder(My first angels were Koi angels) was to put the eggs in a 5g glass jar, put enough MB in it that I couldn't see through it. Then do 50% water changes every day until it was all gone then remove them(they were hatched by tehn) to a larger tank. I did this several times and it worked wonderfully with large yields.
Now I use a tank instead of a jar and don't use the MB. I am going to recommend a book that I love. It was my first angelfish book and has so very much information in it.
http://www.amazon.com/Angelfish-Comp...5546186&sr=1-4. It's not fancy or expensive. One of my grandchildren wound up with mine.
Good luck sherry! Keep us posted!
Carol