Do you have a plan as to what you will do with the excess fry, or are you going to try to control the population by one means or another?
If you do not put any effort into controlling your population and try to "save" all the fry, you will quickly find your tanks over stocked. Granted with the tanks you have it might take six months to a year to do this.
A 10gal fry tank does nice unless you have multiple breeding females, because they can fill it quickly. And you have to keep moving them to make room for newer smaller fry.
Not trying to talk you out of it, just giving you fair warning that they breed alot. You can get on average 15-20 fry every month from each mature female. I was being careful to control my population, and had a single female give birth to 80 fry in one day, which after a month or two overwhelmed my fry storing ability. Large numbers like that are rare in my opinion, but have read that the broods can get as large as 120 fry.
If you want to keep the fry you will have to take steps to protect them from your filters and gravel cleaning. I've found that for a fry tank fine gravel that they can't dive into is a plus, and have found that a bare bottom tank is even better for the newborns. Ive tried to cover a power filter intake with a fine net, but that just caused the fry to get stuck to the net. A sponge covering a power filter intake works much better. I also tried getting a large sheet of filter pad and compeletely covering a 10gal undergravel filter plate with it. This also worked very well and Java Moss stick to and grow very well on it. You just have to leave extra filter pad on the plate to make it a tight fit in the tank so that it won't float up on ya.
For food, the fry can eat flakes crushed into a powder. They seem grow expecially fast when fed live baby brine shrimp. And with a pipette or medicine dropper you can easily measure out the right amount to feed them so that you give them enough for rapid growth, but don't polute the tank with uneaten excess.
