OK group. What are you guys using to keep algae down in your watering systems. I want to go to a nipple system, but if they get the green crud like my ground waterers do I'm not going to bother. I live in N. Virginia whereit's hot and humid, which results in astronomical algae growth. I wash mine every other day with Dawn dish liquid and they STILL get cruddy. I've heard of folks using bleach and other chemicals. If using bleach it would have to be a real small dose. Let me know what you use and at what dosage. Thanks gang!