I've been fairly lucky with mine so far. Not much uprooting. But they do like to punch the occasional holes in leaves (leaves a slight V shape hole). My biggest is about 5" currently but I'll be putting them soon in an 8' planted tank so they can grow to there full potential I hope. Substrate is sand, which I fear might be easier for them to dig up plants, time will tell. I am trying to stick to heavy duty & well rooted plants for the most part, mosses, ferns, crypts. Should be planted soon and I'll give the plants a chance to establish before introducing the clowns.