I keep in in my main tank but I also monitor it constantly as it has a mind of its own so to speak .
herbivores will help but it still takes over fast if not maintained daily it can over run a tank in no time , yes it looks good and helps with nitrates but it can go south fast if you don't have experience with macro's , remove it from your main tank and add to your sump if you have one where you can keep it under control more easily
here's a good start to learning about macro's just click link below
Marine Plants In The Aquarium: An online guide to the identification and care of marine plants and macroalgae in the aquarium.