The last one looked close enough... now if only you could get it to last longer! The cloudiness of the water was damn near perfect, too. Good job! Did you write down the secret "viscocity" formula? LOL
Forest the tube wouldn't work for close-up shots, unfortunately - but I bet it *would* be great for webcams where things aren't totally clear.
Snoops I think I'm at 4 feet too, never measured it though. That reminds me though, I have new toys to try! Woohoo!