To increase yields here are my suggestions.
For 50 cents from the local fish store get one of those stiff clear plastic airhoses to put at the end of the hose itself. Anchors itself and it produces bubbles that are just the right size. I don't know why but 'they' say that air bubbles created by airstones are too small and are NOT good for Artemia. I don't remember why, just remember they said that.
Always add 1/4 tsp baking soda to make sure pH is above 8.0
And 3 drops of unscented bleach to each batch of eggs you are hatching. And maybe the bath water you may be 'heating' them in.
However you do it, make sure the temperature is between 80-84 degrees Farenheit.
Too hot (86 degrees for example) and the nauplii will suffocate, to cool (78 degrees maybe) and it will take too long for the Nauplii to hatch. This was the hardest part for me to get down. Once I did, the rest became easier.
You only want to hatch the amount you would want to feed in one shot.
Freshness is VITAL. at 18-24-30 hours the nauplii have just hatched and their nutritional value is EXTREMELY HIGH, but afterwards the nutritional value takes a nosedive.
Only hatch the amount you want to feed FRESH. And it is addictive. Once you have success you want to hatch everyday. Almost ALL creatures love this stuff.
For the most in depth expert article on the topic,
I highly suggest the article this year by Mike Helleg and Gary Lange (both expert fish breeders) in The Tropical Fish Hobbyist (TFH) named 'Hatching Brine Shrimp'. Amazing Article. I have reread it over, and over, and over again. These guys know their stuff.
You can feed your creatures the best there is for roughly 4 cents a day.
Great thread. I can't wait to see more photos.
Oh, and shut off your filter until they get all eaten. No need to feed your filter.