Hi All

Just wondering about the operation of self-watering pots. Does it work on
evaporation of the contained water in the reservoir underneath?
The reason for asking is that I have an application in a long window-box and
it will cost about $140 to buy enough to do the job whereas 16, 10 litre
pails collected from building sites, side by side, for free, fashioned to be
self watering would do as well, as the containers wouldn't be seen.

Thanks

Graeme