Watering from underneath.

[murihikukid]

Hi... I am hoping to have a self watering system on my plants ...So far I have not found a material suitable as a wick so I intend to use soil as the wick...A Piece of PVC pipe goes through the centre of my planter from the reservoir below ..the pipe has sponge on the bottom and soil sits on top of the sponge in the pipe and feeds the soil above.....I hope to have all planters connected to one water supply which will be turned on once or twice a day to refresh each reservoir ..because everything is on concrete any overflow will simply dryup....

I wonder if anybody sees any problems with my idea...Thanks Ron