> the ph is perfect, no nitrites...i monitor all and more each week....i > have > lowered my lighting to less watts I had some brush algae in my 29g community tank at work. But when I lowered the pH to around 6.8, I eliminated the algae. The pH was over 7.0. I used Keta pellets in a filter bag to lower the pH. So, when you say the pH is 'perfect', I'm wondering what your target pH is and whether that might be a variable to consider. Betty Goetz _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member