yea, i just didnt have any tubing that large or that long,(oh god that sounds bad) not to mention that this all happened kinda spur of the moment... so i didnt really have a lot of time to prepair either..
all i had at the time was the tubing that i was working with for my solar water heater, so i tried it, in theory its a gread idea, and would have worked, if i had either had larger diameter tube, or more verticle sepperation to increase the travel speed of the water and solids. I'm glad to hear that you were successfull with 1", i'll try and remember that for the next time i have to get the sand out of the bottom of my tank.