Outdoor Self Watering: water capillary mat

The use of water capillary mats in nursery and greenhouses provides watering to the plants needs. This works for large or small plants, dependent on requirements, through wicking of the water.
I wonder about inserting this water capillary mat into your container and attatching a wick to a water source. You could have 1 five gallon bucket as your water supply and 4 other growing containers wicking the water as the need it.
Has any one had any experience at this, or worked with something similar?

I have used a earth box and a couple other one like it just DIY ....And i also use a matt like thing that its tips are in water for my seedling/clones ...works fine ...but some people say the cannabis HAS to be watered from above...but i have grown them side by side and wick kinda of system vs reg way no difference.......But hey get a lil of both worlds a go with a https://www.rollitup.org/hydroponics-aeroponics/13477-hempy-buckets.html hempy bucket....i like it alot