I have a 20 long planted aquarium. I dose seachem flourish once a week. I have: various anubias species, ludwigia, chain swords, an amazon sword, floating water sprite, and a bunch of xmas moss glued to a large piece of dragon stone. My chain swords are brown and melting. My xmas moss has turned completely brown and unsightly. My anubias has brown algae all over it. I have an algae problem. There is even algae in the substrate. I got 4 otos and 2 amano shrimp to help but they haven't made a tremendous difference. Suggestions would be greatly appreciated.