Better that way. The Mojano anemone has a potent sting, you don't want a population of it established when you start putting in livestock and corals..they'd all end up beat up, eaten and well..money wasted.
Are they hardy my tank is less then a week old my snails n crabs n the blue mushroom seems to b thriving my ph is 8.2 no nitrates my ammonia is between .0-.25 but I was useing API freshwater kit for the ammonia
I think they're all going to make it, except maybe the pom pom. Since you just began the cycle..there's a high chance it'll die. Let it run its course.
IMO the "majano" looked like a st. Thomas mushroom. Still bad in my Book though, they will eat your fish. And agreed the best hitch hicker I've ever gotten was a mini brittle star, other then that I've had hundreds of bad ones lol. I've gotten so good at iding things my dad calls me with a discription of something he's found in his tank at least once a week lol. And considering I payed $15 for my Pom Pom I'd say you are doing quite well and have found or are ordering from a decent place!