Habitat - Indoor :: too much for my little ones???

[chinkieboy]

I have a 20 gal tank i just set up today.

Due to the Fluval 405, I have the water almost to the top of my tank.

the tank is 30x13x12 or 30x12x13, i wasn't too sure. right now water is almost to the top of the tank only about 4 inches room left. is that too much water for 2 1.5 inch-2 inch little red slider??

[rsour24]

im gonna guess here and say that ur tank is 12inches high and 30inches long, in hich case u have about 8inches of water, which should be fine, make sure to put a spot or 2 that they can rest on underwater close to the surface