A piece of copper wire in the water will dramatically slow algae growth, definitely can't claim organic or natural eggs if you are adding strong chemicals to your chickens water.
(1) Are you new to chickens / when did you first get chickens?
(2) How many chickens do you have right now?
(3) What breeds do you have?
(4) How did you find out about BackYardChickens.com?
(5) What are some of your other hobbies?
(6) Tell us about your family, your other pets, your...