Right now I have a fishless 10 gallon tank I haven’t cycled yet. I have the plants, substrate, decor, heater, and filter. It’s ready to go, I just haven’t started the cycle. Recently I’ve had a lot of brown algae growing everywhere staining my white rocks. Most annoyingly the algae is growing on my large amazon sword leaves that are closest to the light. I thought the algae would wash off but it has stained the leaves making them appear brown and not their beautiful bright green. How do I get rid of the algae? And why is it brown algae that’s growing and not something like green algae?