Reversing Green Spot Algae - Algae

bosmahe1 · 10-30-2009, 11:54 AM

Quote:

Originally Posted by Glaucus

Some plants in my planted tank are covered with GSA. I did a search on the forums and found out this is likely caused by low PO4 levels (<1ppm); I meassured less than 0.4 ppm. So i am increasing phosphate levels. Will this convert GSA infested leaves to spotless leaves or will it only prohibit GSA growth on newly formed leaves?

increasing PO4 will only inhibit new growth of GSA. I've never had luck with anything eating it so I just trim off the infected leaves and scrap the glass. If the GSA is on slow growers like Java Fern or anubias, I just leave it since it's not that noticeable on the dark green leaves anyway.