Hey all...been working on my algae problem based on the great info provided by these forums but I have an issue that needs help. I have this algae growth in my substrate that is crunchy-like. I've cleaned it out before and it's back. Water chems are good. One live plant. 3 cichlids and a catfish. Cichlids healthy with the exception of a recent and ongoing case of fin rot where my cichlid has lost his entire tail. No history of ANY issues other than algae. Image below. Is this algae or do I have bigger problems ?