Raceimage
Premium Member
I have eggcrate 4.5 inches wide along the back and sides of my tank. The tank is built into the wall so there is no escape from the front. I have had a mandarin, watchman goby, and 6-line jump out in the past 3 months. Not fish that I would picture jumping that distance. I'll probably put eggcrate over the entire top; but, i'd like to hear what everyone else uses.