Thanks, for the kudo's, however it is not rocket science, nor requires any special equipment, just the following:
Fish tank with water in it, piece of light blue cardboard behind it. A light stand with a clamp, fill a jiffy bag/sandwich bag full of water, use a pin to prick a small hole in the bag, water will drip out a fairly regular interval.
Set the height of the dripping bag of water about 3 ft above the tank.
Use a flash set at relatively low power (also meaning short flash duration, I.E. around 2500-10,000th of a sec) . Since there is some delay in the camera firing the flash, it is necessary to press the shutter release when the drip leaves the bag. Adjust the height of the bag until you get the desired result. I found that I could pretty much get it every time, once I got the height down right. The height is equal to the delay in the camera/flash system firing, then it just meant the variable was whether I pressed the shutter release at the right time, after a few tries, I could be pretty consistent.