JG67
Aquarium Advice Apprentice
I apologize in advance for my naivete, but I am a new aquarium owner. I have a 70 gallon corner tank in my office being maintained by a third party. There is the begining of green algae present on the rear and sides of the tank (which are masked off in black). In many of the tanks I have seen in aquariums, these areas (generally the back of the tanks) are left in this condition and they tend to turn green-black-purple. Is this the norm or is it appropriate to scrape this off?