Its not that mine have ever TRIED escaping? (I have three peacocks) However they will sometimes get excited and swim at the top at such a high speed that they will come out of the water... Mine havnt come out far, but they can.
I would definately put some sort of canopy on top that covers the top.
Do not use a heater that has the little red light inside it. I recommend Stealth heaters because they have a black protective layer on top that is nearly shatterproof and will not tempt them by the light.
I dont use a fine grain sand, because they dig often and I dont want the sand to A.) cave back in so they are constantly digging because that can lead to water quality changing!
Put in big pieces of live rock and small rubble. They love to redecorate, and small pieces are easy to move. When they molt they will also close their burrow with these pieces.
I feed my mantis shrimp live food only because I like to give them the exercise (I have heard if mantis dont use their raptorial appendages [smashers] that eventually they can lose them in a molt)
Sorry Im rambling and could go on and on!... Hope that helps.
P.S. a 2' by 2' cube would be good amount of space if its made of acrylic for safety measures.
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BRITTANY
"Live the life you want to remember"
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