Hey guys, I just finished up my first viv build and I'm looking to seed it with some lil cleaner uppers. So Everyone has been suggesting these two but no one has mentioned actual species. So should I do isos and spings? Just one? Mixed springs colony? White isos vs purple vs tropical?? Suggestions? Since I'm a beginner, I'm looking for easy and effective for my RETF vivarium. Thanks for any help in advance!