How many hours should I keep lights on?
T tangdude Apr 28, 2008 #4 i keep t-5s on for 12 hours. actinics in the am for 2 hours days for eight then 2 more for the actinics.
i keep t-5s on for 12 hours. actinics in the am for 2 hours days for eight then 2 more for the actinics.