If they are fertile???
Go to you local aquatic dealer and get a large polystyrene box they get there fish in, normaly free as they only throw them away. Then get a heat mat to stick to the rear of box(some put it on the bottom) with a HygroTherm - Humidity & Temp Controller to keep them at around 68f-74f some people like to keep them higher to hatch them quicker. Then you need to add a inch or so of water at the bottom of the box to keep the humidity up, you also need a plactic container to put some pearlite/vermaculite in (your prefrence) and remember to add water to it so it not dry but not wet you should be able to get a handful and sqweez it and only get a few drops of water out of it! When it come to puting your egg container in the poly box use some bricks or something to keep egg box out of the water.Then put your eggs in about 1" apart and let them do what they do!
I also put a small peice of class in the top so i could see what going on without desterbing them to much, you will also have to open the lid every week or so to exchange the air inside!
Or you can go buy one! This is just a cheap way of doing it and it works for me and many others.
I think im right in saying you will lose some eggs normaly, i have a 80% hatching success rate.
Just to add you may have to put some holes in the poly box if it gets to hot. I live in the uk and my heat mat never comes on as its just at the right temp all depends on where you live ect???
I have added some pics of the one i made to help!
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