Hi I looked up at the top of the water in my tank and found a massive bubble nest. its covers about a square foot of the top. I have a single male dwarf gourami in this tank and hes going crazy at the top blowing bubbles. I am concerned about the nest because the top is covered in duckweed but he seems to have built the nest underneath the duckweed. I have a male betta in the tank and they get along great should i get a female to go with him? its a 100gal discus community setup.