sleep1937's amphibians
General Care

some rules apply to all amphibians. no matter what amphibian you're raising, these are the basic things you need to take care of:

Before buying an amphibian...

Think twice. Many impulsive purchases of reptiles and amphibians lead to dead animals and unhappy buyers. Remember that amphibians are live animals and not toys. there will be almost no interaction with your amphibians since they should not be handled very often due to stress. it's also not very healthy for neither the handler nor the amphibian, so If you're looking for interaction or a pet to touch do not buy amphibians.

Research
 
This is the first thing you need to do before getting any pet.  go to your local library or search for information on the web. make sure that you can supply all of your pet's needs. some animals are very problematic. some amphibians need a lot of space, some require heating, some need their water changed twice a week, some will only take live insects etc. Remember that the people at the pet store don't always know what they're talking about, so trust only yourself!

Housing
 
How many amphibians can be kept in a single tank? The answer to this question depends upon many factors including the size and species of the amphibians as well the dimensions of the tank. when overcrowded, amphibians can become stressed and even sick; please keep that in mind when you buy the tank and house your amphibians. 
When you do keep a few amphibians in the same tank, make sure they can live together and are about the same size. adult amphibians will usually eat tadpoles and even other adult amphibians, as long as these fit in their mouths.

Water
 
First of all, using direct tap water is not a very good idea. As you probably know, tap water contains chlorine, that keeps the water safe for us to drink, but can be deadly for fish and amphibians. To allow the chlorine to evaporate, leave the tap water standing for at least 24 before you use it for your amphibians. It is better to leave the water in the sun. if you don't have that much time, you can get anti chlorine at any pet store. the recommended dosage will be stated on the bottle, of course, but sometimes you don't know how many liters of water your fish tank contains! (1 liter = 0.22 gallons). well here's how you can find out:
 
when calculated in inches, the volume in liters is: 
  
length * width * water depth
61.025
 
when calculated in cm, the volume in liters is:
 
length * width * water depth
1000

Keeping the water clean is very important. If you have a small tank and can change the water once a week, it's great, but if you can't, you'll probably need a filtration system. (you will also still need to clean the filter once in a while).
some amphibians are more sensitive than that - my african clawed frogs, for example, need their water changed every 3-4 days, and can't stand filters. you will need to take into consideration the special needs of your specific amphibian and make sure you have enough time (and patience) for them.