I am now in the Kuo-tuan's layer and have finished most of it up, but two questions:
you can pick up some corrupted tadpoles and drop them in the kuo-tuan's breeding pool, but this does not seem to do anything - am i missing something?
you can click on the altar to the kuo-tuan goddess or something where you might be able to make a sacrifice, but i have not been able to make one.

anyone else see anything i am missing.

*SPOILER*
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1.It means you can kill the Kuo-toa prince. He won't die unless you put them in the pool near him.

2.Summon animals and direct them onto the statue for one HELL OF A BATTLE. So beware.

1 - i was actually able to kill him without tainting the pool, but it took a long long time - i didnt meet him in that room, but in an earlier room

2 - not the demigorgon statue - which yes, is a huge battle, but an alter to the kuo-tuan's that is next door to the prince's room. anyone?