They will be skittish either way. But they will eventualy settle after a few seconds.. turn your lights on when you get up, and turmn them off when you go to bed like a natural schedule.. like was said b4 you could alway get soem plants that float.. if you put live plants in the tank you wont have them long.. your p's will eat the plants ( sometimes even fake plants).. just keep your lights on a schedule and in a busy zone with lots of traffic in your house