Do not bother the mantis, you are very right when you say the larger they get the harder it can become. Sometimes they will loose their smashers when they dont get used often. When they die it is usually from a molt but they can take a while to molt, sometimes hiding out for up to a week, then they eat their molt. Hope this helps and good luck!
3' fine sand bed 1x Orange Stripe Prawn shrimp goby, 1x sixline wrassemated pair of true percula clowns, 1x CBS shrimp, 2x peppermint shrimp, 1x pistol shrimp, 1x tiger tale cuke
, ~20+ snails, ~10+ hermits, 1xserpent star.
green Bubble coral, hammer coral (8 heads!) ,various Zoos,green finger leather, green star polpys ,shrooms
175w 10k MH
28w actinic 03
2x maxi jett 1200
Prizm skimmer (modded)
Hagen powerfilter(for running carbon 24/7)
nano arctica chiller