Yup easy as that. This is mine that can do up to 24 plants. Total cost for the feed system was a bit more than needed because I chose to use a diaphram pump and many sites. I also made a drain table and used a condensate pump to automatically pump all runoff down the drain.
I fill the res about every 4 days now and the rest it does on its own. Total cost for the table, autodrain and autofeed was lUNDER $500CAD But can be done much cheaper... especially if just the feed system with pond pump under $100.