its water and it wont hurt you. its a modified version of goo so you dont die.

This make no sense, how do you get the cube and the first room so you can leave to the second? I look everywhere. even under goo, eer dirty water.... not sure how I can go down there since I don't have God on but ok....

Nice chamber, enjoyable to play; thumbs up! There are not many PeTI chamber with non-deadly water; another one is my map " Interface (Hammer Version) ", where the water is just a barrier. Take a look if you like, but be warned that the core puzzle is quite hard. You can tour the observation rooms to figure out the puzzle and get hints in the training chambers.