Definitely sponge your filter or cover the intake with something like panty hose.
I believe that the babies will eat crushed flake once they are free swimming, but until then they will be sustained by their egg sacks.
Dont feed em until they become free swimming. Then you can use crushed flake. Mix it with tank water first and then use a turkey baster to "shoot" the liquid to the fry. Best part of fish keeping IMO.
That link will bring you to a site that is dedicated to the Electric Blue, Gold, Blue Gene and Standard Dempsey. You have ALOT of reading to do. Get on it!
Here is specifically the ---->breeding section<---- of the forum. Lots of info there on how to raise the fry, also when and what to do with the parents.
There is another forum that is similar as well, which is ----> here<---- Start readin!
Lots of luck to ya man and lets see some pics!!!!!!