I know bulk reef supply carry's a kit i just got for dosing, nothing is automated but it is very simple, gives you three jugs, two measuring cups and two squirt nozzles. Enough supplies to make three gallons of additives for calc and alk each as well as 1 gallon of mag, also comes with three extra mag additive pouches that make 20 ounces each. I just picked it up a week ago, very cheap and a good start before you get to dosing pumps and automation. I just spread the dosing throughout the day.