Bec, try picnik. Chose Tint, I'm thinking blue or purple or pink, then decrease the fade. It increases the intensity of the water.
Thanks CBG, that's kind of what I did but in Picasa, I used filtered black and white but I can't remember what colour filter I used. I really don;t want to look at these any more! This is what it was like beforehand, great colour but no contrast or detail, no subject (which I find hard to deal with): Flickr: bec293's Photostream