That purple stuff is all over the back wall of my nano, should I scrape it off?? Will it get worse? I do like the color but was just wondering if I could have too much of a purple thing.
it is up to you, but I let my whole back and one side glass (by a window) cover over. It makes a nice backdrop and imurses me in the feel of the ocean.
One thing to keep in mind is scraping it off allows it to spread in the tank and "seed" the tank.
As others have said it is really a personal thing. I have it on my back wall and one side. Viewing areas are scraped.
Also since this is a nano the back wall is probably plastic. There is a potential of serious scratching the back wall. As Coraline can be difficult to remove once it takes hold.