You can put them in the closet if you want.
For a 29 please find your situation below:
Dark = death
20w = slow wilt and die over several weeks / months
40w = severely stunted growth, mass die off if there is a sudden change in water parameters
60w = slow growth
80w - 150w = varying success depending on the individual species and their lighting reqs
150w+ = slow wilt and die over several weeks / months
For a 29 please find your situation below:
Dark = death
20w = slow wilt and die over several weeks / months
40w = severely stunted growth, mass die off if there is a sudden change in water parameters
60w = slow growth
80w - 150w = varying success depending on the individual species and their lighting reqs
150w+ = slow wilt and die over several weeks / months