Yes spring water will work, but if you want to circulate the water you’ll need a basin with a pump in it. A small waterfall pump will work
You can set it up to potentize the preps and spray it on the farm in a closed loop system
You can siphon water from the source into this form if you have water higher than the form. Fill up a hose with a funnel while holding one end closed. When it is full, put one end under the water and lower the other end onto the form. You can install a valve on one end of the hose to open and close the water.
How long does a flow form need to be to energize/clean/destagnate the water?
3 or more sections.