I've got some Amazon Swords that had been doing really good but now I'm getting dark brown spots on the leaves and some green fuzzy algae. Some other plant (can't think of the name) is losing a lot of leaves but I'm also getting a lot of new grown. Looks like the leaves closer to the base are thinning out and the stems are growing taller. I use Flourish and now am thinking maybe I need to bury some fertilizer tabs. Looks like I'm getting new Amazon Sword growth but everything looks dingy.