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371 Posts
My fish don't seem to panic when the lights go on/off but they will get spooked if the lights in an adjoining room are turned on/off.
About the OP, I think he is asking why the photoperiod is broken up into multiple blocks.
A lot of it is making the tank fit the keeper's schedule so that the lights are on when they are home and off when they are out/sleeping. Theres another point saying that the off periods will replenish CO2 levels in non CO2 injected tanks but personal enjoyment is the stronger reason in my opinion.
About the OP, I think he is asking why the photoperiod is broken up into multiple blocks.
A lot of it is making the tank fit the keeper's schedule so that the lights are on when they are home and off when they are out/sleeping. Theres another point saying that the off periods will replenish CO2 levels in non CO2 injected tanks but personal enjoyment is the stronger reason in my opinion.
