They are closely related species of the Ceratophrys family (Horned frogs - Pacman frogs) in regions of South America. C. cranwelli are more commonly available in the pet trade and seem to be the overall best pacman to start out with. If I'm not mistaken, almost 100% sure that all pacman frogs are nocturnal. The C. ornata isn't all that different from the other pacmans other than what I can think of off the top of my head (smallest horns of the ceratophrys family, largest known pacman in captivity, broad heads, and are novice pacman frogs). The C. cranwelli adult size in the range of 5-6", and the C. ornata 6-8".

During the daytime you can use an incandescent clear daytime bulb. These can be found at hardware stores (spot lights), or in pet shops labeled under the brand names, Exo-Terra or Zoo-Med. For night time viewing you can buy a red incandescent bulb (infrared). Depending on the size of your tank is what wattage light you'll need, so if it's a 10 gallon, it would be appropriate to utilize in the range of a 40-50 watt bulb. You can also buy a dimmer switch at pet shops or hardware stores to lower the wattage output so you're not getting so much heat produced.

Yeah the plantation soil is fine, isn't it the Exo-Terra brand? If it is, it is coconut fiber labeled under a different brand that is popular under Zoo-Med. Holds humidity great, and provides a good consistency of dirt for them to burrow in. You can also try going to a hardware store or plant nursery and looking for a top soil that is additive free with no mulch. That could also work as an alternative since your choices are limited. Also, Amazon or any other online store is a great place to purchase these types of supplies shipped to your door.