The Planted Tank Forum - View Single Post - Green dot algae
Thread: Green dot algae
View Single Post
Old 05-14-2012, 11:14 AM   #3
Denis Onii
Algae Grower
 
PTrader: (0/0%)
Join Date: Jul 2010
Location: UK
Posts: 9
Default

Low PO4 seems to be a factor with GSA. The likely scenario is that the amount of PO4 you are dosing isn't enough for your lighting period. Either increase ferts or lower lighting.

Personally I would lower lighting to 6 hours for couple of weeks. If that eliminates the GSA then slowly increase lighting along with ferts until you get back to 10 hours.
Denis Onii is offline   Reply With Quote