will a derasa clam be ok in a 5 day black out?

[werd]

hey all i have a derasa clam that has been doing great. its about 3 1/2 inches now. but....my tank has alge and cyano and some other weird brown stringy stuff growing on some of my corals. my levels are perfect. all in need to is will the clam be ok in 5 days ish of darkness?

 

[MondoBongo]

i've done 3 day blackouts before and my derasa was fine. 5 days should be ok, but that's a little longer than i would personally be comfortable doing a black out for.