green spot

  1. Sam I Am 75

    Green spot algae

    Hi need some help please, I have 250 ltr tank lit by 2x 54w t5 tubes. 9 hrs of light per day, tropica soil substrate and CO2 injection, easycarbo added daily. Plant growth for the first couple of months was great, but now is severely diminished and I have an issue with green spot algae on both...