If you're still cycling and it's a mantis - get it out while you still can.
Trust me, I've been there.
If you want it, keep it in a second tank, but don't listen to the people who will come on here and tell you that it will "probably" do no harm.
Lightning "probably" won't strike me, but my chances are a lot higher if I'm hugging the only tree in the field at the time.
standard 55 lbs LR
, 60 lb live sand, 10 gal
sump/refugium. Urchin skimmer, mag7 pump, 3 x 96W PC
combination 10,000K/actinic bulb, 2 blue LED moonlights
1.024, temp 79.5, pH 8.4
Livestock I added:
1 skunk cleaner. 12 hermits: red, scarlet, blue. 15 or so assorted snails. Discosomas, Ricordia, Rhodactis mushroom corals, chaetomorpha (sump), 1 feather duster, Montipora digitata
, Montipora capricornis, Montipora hispids.
assorted zoos, Xenia, Kenya tree coral, green Sinularia, green star polyps, branching hammer coral, bubble coral, Devil's hand leather. Yellow chromis, purple firefish.
Hitchhikers: the usual suspects :crabs, bristles, urchin, mantis shrimp (now in exile in mantis tank)
List of possible/likely newcomers:
Feather duster. PJ cardinal, Bangghai cardinal, Firefish goby, Clownfish, Neon goby, Yellow watchman goby, Orchid dottyback. Various corals.