My dosers cost maybe 2 bucks :tongue: 2 pee cups, and some airline hose. Not really fully automated but really simple. Drilled a hole in the pee cups and inserted airline hose. Then I tie a knot in the airline to adjust the drip rate. Add the solution and it drips into my sump. Alk before work(lights out), cal after work. Gonna look at my tank anyways and it takes only a few seconds to add fluid to the cups.
Not bad!! :wink: