If you breed 2 albinos of compatible type together (depending on species, there may be more than one type of albinism and they may or may not be compatible), there is a 100% chance of all offspring being albinos. If you breed two definite het albinos together, statistically you are likely to get one albino hatchling for every 4 hatchlings. Because it's just statistical probability, you could get all albinos, all hets, or all normals.

To illustrate how the probability works, put 25 white marbles, 25 black marbles, and 50 red marbles of identical size and texture in a non-see-through container and shake until well-mixed. Pull out 4. Write down what they are. Put them back and shake then pull out 4 more. Write them down. Repeat a couple more times. Now, each of those sets of 4 marbles was a clutch from two het albino parents. The white marbles were albino babies, black marbles were normal (wild-type), and the red were hets. Did you get exactly the same results every time? Did you ever get an all-albino clutch or an all-normal clutch? The more times you draw 4 marbles, the closer your draw numbers should be to overall 25% albino, 25% normal, and 50% het hatchlings (or marbles).