Only way to kill it all period is to black the tank out for a week or 2. Cover so absolutely no light gets to it. Algae is a plant and plants die with no sunlight. It's the only guaranteed method. My father and I used to be huge into freshwater aquariums. Please don't go crazy with chemicals it's super hard on the fish. Also the light is a huge factor too. it's been awhile since i looked but there are many many types of bulbs and u may have one that promotes plant life.


Good guide for lighting:

http://www.drsfostersmith.com/pic/article.cfm?articleid=414


How to black your tank out:

http://www.aquariacentral.com/forums/threads/how-to-properly-black-out-a-tank.213369/

Last edited by k20350; 07/28/15.