When you choose to upgrade an Elixir Collector, it will automatically collect any uncollected Elixir.
Tapping on the collect icon collects all Elixir from all Elixir Collectors.
The Elixir Collector takes up a 3x3 tile space.
Players can get an idea of how much Elixir the collector is storing by how full the tank appears.
The production rate and capacity depends on the level of the Elixir Collector.
When the collector is full, production will be stopped until it is collected (or raided by an enemy player).
The Elixir Collector collects Elixir from an unlimited underground reserve (a.k.a Ley Lines) and stores it until collected by the player and placed into an Elixir Storage.
Upgrade your Elixir Collectors to maximize elixir production." " Elixir is pumped from the Ley Lines coursing underneath your village.