What to do? :S

what else do you have in the tank besides cories?

(I used to carefully take the eggs off the wall and put them into a breeder net and was successful at it)

black widow..... not familiar with that but I know of the others. I asked because if you only had the cories in the tank, separating the eggs from the main tank wouldn't be a necessity.... but seeing as you have others, you need to in order to save them. OR you can throw some heavy planting in the tank and hope for the best, I used to get 2 or 3 that way. BUT I would say the breeder net is the best way to go if you want to keep any..... and get some Meth. Blue for the eggs to keep them fungus free

I used the fishnet. I would bring the corner of the net and slide it on the glass next to the egg until the egg caught hold. The eggs are pretty sticky and catch on pretty easily. You'll get the hang of it after the first couple of eggs, not to worry.