How big is the fluval?
Many of that type are too large for dwarfs that only grow 1 -11/2" in size and can fit maybe two or three on a dollar coin.
20 in a five gallon tank is a good start.
Too large a tank means wasting a lot of food because you need to flood the tank with the live food so they can feed while still hitched. Dwarfs, unlike their larger cousins, tend to not hunt down their food but rather wait for it to come to them as they are hitched. Then you need to remove the excess food before next feeding as it will have lost it's enrichment.
You will need a hatcher, a growout, and an enricher for the bbs to feed the dwarfs.
Sterilize or decap the cysts, (or buy decapped cysts) hatch out for a day and then grow out for a second day until they develop the digestive system and are able to eat. Then, enrich them, preferably in two twelve hour stages with new water and enrichment for each stage.
If they are all adult dwarfs you can hatch out enough for a week and just enrich the amount you need daily. If you have dwarf fry, then you will need to hatch at least every other day until they grow larger.
I don't know if you will find any help from my website pages but here goes.
http://www.angelfire.com/ab/rayjay/Hatcher.html
http://www.angelfire.com/ab/rayjay/brineshrimp.html
If you are able to also culture copepods of an appropriate size, that is great for a treat as well.
Some people add mysid shrimp to the tank so that the dwarfs can feed on the nauplii of the shrimp.
