raglanroad

Interesting article by Balon http://resources.metapress.com/pdf-preview...mp;size=largest

LED panels are crazy expensive. Maybe try T5 high output with a fan.

This is how I understand it: After sanitization treatments at many plants, there is residual or added bit of chlorine. Ammmonia is then added ( making the chloramines) in slight excess of what is needed, so there is some small amount of ammonia left over in the water when that method is used.