Help on making a drip wall

[Zip]

I am in the middle of building a 30 gallon false bottom tank for two juvenile Leucs, and I'm wanting to build a drip wall.
I've already got everything to build the wall, but I'm a little confused about what to do next.....

What do you guys and gals use to make the water drip across the wall?

any and all help would be appreciated!

Thanks in advance for your help.....
Zip

[ChrisK]

http://blackjungle.com/gallery2/main.php?g2_itemId=2108

[Zip]

http://blackjungle.com/gallery2/main.php?g2_itemId=2108

Thanks, can this be used with a canister filter?

[Zip]

http://www.youtube.com/watch?v=nG55dX6uTFk
Looks great now, and the drip wall works with just the pump...