Malcolm: Thanks for your comment. I too like the flatness of the photo and you're probably right, if it were in the abstract section, it may not be such an issue...
By the way, as far as the grid pattern is concerned: I took this shot at night with only the room light (in the kitchen). How the grid pattern emerged is something beyond me. I didn't use a screen or anything. This shot was one out of about fifty, and only this one displayed the pattern. Weird, huh?
No need for more sharpness in this photograph. I feel that the softness conveys the fluid nature of water very well. Perhaps the problem is in the way we view things with the label of "macro" on it. If this were posted with the subject of "Abstract" would it still need more sharpness? (Not trying to get combative -- just start a discussion...)
On another topic, I assume that the grid pattern is caused by light from a window screen? I enjoy the contrast between the uniformity of the man-made squares vs. the natural, organic shapes in the ripple. Perhaps I'm getting much too poetic (Okay, everybody make fun of me now), but I like the way the squares are strong right in the center of the impact, are progressively distorted and eventually disapear as the ripple spreads out in time.