I kept mine in a variety of tanks. They were in 20g, 40g, 50g, and 120g. I had them alone, with other fish in a community and in with just BN plecos. The temp in all my tanks was about 78 degrees. My water is now and always has been hard and slightly alkaline. But they absolutely need a lid or the water level kept at least a couple of inches lower than the top as they can and WILL climb out of the tank. I have found mine at the opposite end of the house as their tank is kept. They can live outside of the water for short periods of time, as long as their gills are kept wet. Mine used to let me handle them outside of the tank, but I'm not sure I would recommend this. I used to feed them everything from algae wafers, frozen shrimp from the grocery store (small pieces), fruit and vegetable slices, and occasionally they would take a small piece of bacon right from my fingers (I mean small, like a cm sliver). They are not picky on what they will eat. Mine also used to shed, then two weeks later be in berry (eggs), then she would hide for about a month, then reappear with babies all over her, shed 2-3 weeks later and start the cycle over again. They definitely need a cave to retreat into to feel comfortable. It's funny to watch them grab food then scurry backwards into their cave to eat it, lol.
This is a video of my Lobster just after I got her. She went into berry within a week of bringing her home! Hopefully the video works for you...
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So I guess you only need to click on one of the blue underlined links, even though the whole thing showed up as the web address.