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kyle_5rb said:
what is the ideal time for lights on and off? example -> 12/12 of light and darkness, when are they most active with the lights on?
I think the best would be to have the lights on during the day, and off at night. 12/12 seems to work for me. My piranha is more active when the lights are on, and pretty much chills when the light goes off at night.

If its not planted I wouldn't leave them on quite so long. Algae blooms can be a bit of a nightmare to clean when they start up. Regular water changes will help to keep the Phosphates down and you should be ok. I only keep mine on for about 8 hours a day.
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