I like that stuff. When mine gets to the top I leave it there as long as it is not shading the rest. Then you can either cut and replant or pull up and replant the tops or cut and sell. Or move some to anouther tank. It also makes a good floating plant for baby fish to hide in.
My planted tank. 55 gallon fluorite substrate over soil, 64 watts of light, excel twice a week. Weekly water changes. Angelfish pair, guppies, BN plecos and otos. Redone 11/13/2012
One non planted tanks. 75 gallon.