hi i have two red claws in a ten gallon tank all by themselves and i want to put some plants in there but every time i do the crabs tear them to bit. are there any plants that the crabs wont tear up. i've thought about anarchis(brazilian water weed) because i can float it on the top where the crabs wont be able to get at it as easily but i've heard it's toxic to crabs. any one know any info on crab safe plants.?