Hard to believe thread now 8 years strong has evolved into wick/fountain/other evap systems !
I have been using El Subcomandante's design for that long
Must see: For flow rate see this ingenious solution http://www.youtube.com/watch?v=Ttu8_vS2Uv4
then come back... (thanks to Denise, Dillon, and JennyG)
Here is my 2006 version
Here are my 2014 observations & suggestions...
Plywood Warping... use 3/4 inch, paint it black with oil based paint (not porous water based)
Getting the pump to pick up (low level) water.... setup the pool slightly tilted to one side, offset the pump to that edge
Germs... A little bleach is a must
Flow rate... Hardware cloth works best, the idea is to get a flow rate that fills all cells and via surface tension "stretches" the water to a thin sheen.
I struggled with flow, getting water to cascade evenly year after year and spent the better part of my '09 burn obsessively tilting, adjusting.
My only pause was to help when Paul Addis infamously set the Man on fire prematurely, R.I.P Paul
For flow rate see this ingenious solution http://www.youtube.com/watch?v=Ttu8_vS2Uv4
and the mods I am doing
To make the swiveling part, use
FHT205 - Lasco Residential and Commercial Hose Adpater - 3/4" FHT X 3/4" PVC -
or "Charlotte Swivel Hose adapter" 3/4 x 3/4 or size as needed
This is a cheap part that allows you to put a hose fitting on PVC pipe, You know how a hose fitting swivels so you can turn until you tighten it up?
Just don't tighten. I tested mine and it's fine with almost no leaks. The flow coming from the 12V pump is low pressure.
Here are the parts including another fitting that screws into the adapter
Here is the final assembly ready mount on the top of the evap plate
Thanks to all for inspiration & idea's
See you all soon..
Stay hydrated my friend.