Most of my systems are resivore is in the ground , the best system because it keeps the water cooler.

Do to problem of not being able to do that and put the holding tank 100 gallon feed troug (cattel tank):thumbsup:
You need to add one more step in the filling , empting. The in the ground way just uses gravity,(that never failed)
All is need is one more step in the filling process and one more pump, and controler. I have used it in a real small system and it worked with out a problem.
If anybody would like the plans just ask:thumbsup:
Automation makes so much easer , you can grow and leave the grow on its own for a month at a time.
Data taken , tanks filled , fill times, ph and pm , water temp,light working, sun circles working,pumps working and the best part it all simple wiring.
It makes a great system , as long as you use duck tape to keep you mouth shut. NEVER TELLING ANY BODY.
Even the narks say I have the best system and the judge commented on it.
with a med permit, takes away some of the excitment .
I even have a system to tell if cops are in the neighborhod