Why is their Brown Algae in my tank?
I have a pretty heavily planted 20 gallon aquarium with Eco-Complete, a 100watt 5000ish k CFL light, and DIY Co2. I thought Brown Algae formed in low light, but as you cn see, I do not have low light. BTW this algae is not stringy or clumpy it is like a brown/light brown paste/coating on the aquarium glass. Why is this happening and how can I stop it?