Mine will stay closed for days, especially if they are moved even slightly in the tank. Moving from high to moderate light will make them take a while (perhaps days) to adjust. Mine seem to prefer moderate to low lighting. They do not like my 3 watt LEDs even if they are near the bottom of the tank.
Last edited by LouisianaReefer; 04/12/2013 at 08:34 PM.
Reason: misspelling
|