Hello everyone, I am looking for help regarding this purple brown algae like fuzz that is taking over my 50gal tetra and angel tank. It all started on a log, that finally acclimated to being come rely saturated in this freshwater tank; however it had now spread to rocks and any decorative item it can. I'd like to know what it is? The cause? And remedies we can partake in to be sure it's a healthy environment.