From my own experience I'd say it's the supplements you're noticing. When I take a time released one I notice the 'getting clearer effect' much less than when I take a non time released one - this is particularly evident when I take my B complex - can we say 'neon yellow/green'?

At 100-200oz of water I'd say you're well hydrated. I bet if you skipped a day with the multi or B vitamin you'd notice a difference; clearer would happen a lot sooner in the day.

Nat