im not saying worms and stuff come from your enclosure. im saying the pet store couldve bought them from a breeder and the breeders couldve had worms. there are breeders that sell field collected frogs for a lot cheaper and many of them come with parasites and or worms. your enclosure is probably fine for now. i had mine in a 10 gallon without a drainage layer for quite some time. dont let the substrate stay soak and wet and muddy though. an under tank heater might be able to cook out some of the moisture if it gets too wet down there. there are many how-to threads you can find on false bottoms and hydroton bottoms. heather has supplied you with a nice one. for drainage you can use a pump to pump out the water or you can drill a hole in the bottom of the tank and plug it. then pop the plug out to drain. all really depends on your money situation and preferance. fecal check is $18 plus shipping. i just recommend you do it whenever possible. i dont want you to spend your time and money on a new tank for your frog then put the frog in it and the tank become infested. the stuff is so tiny you cant see it unless its under a microscope so its not like you can tell yourself. who knows, maybe you will get the fecal check back and everything will be fine. but i still think its one of the first things that need to be done with a new frog. it will save you a lot of time and money doing it first instead of last! and will also cut some of the stress and sickness of your frog if your frog happens to have something and you can medicate it.