I have a 20 gallon tank with hornwort, Java moss and 3 Java ferns in tank. Although one Java fern is turning brown and not doing as well. It also has 10 harlequin rasboras, 10 Pygmy cories, and 2 thick lip gourami. The tank has staghorn and green thread algae.I managed to get rid of a lot of this algae by reducing my light to 6 hours, dosing excel and then not trimming the plants. Also for fertilizer I use seachem flourish, I dose it twice a week and use 1.5 milliliters each dose. I know tanks are supposed to have a little algae in them but is there anyway I can further reduce the algae?