I havnt put any excel in should I ?? Because that's the only plant with the algea going pink? Wow! Love the tank! The grave is at an angle so short in the front thick in the back. And I was think I will get a bac ground but way I want as a back ground is a wall of plants so like u put up sometime like they use to grown vines up on the back wall and grown a plant that grows realy fast and grown it up the wall so that will be my background? is it possible? And how long till good Algeas grow so I can put fish in?