So I'm going to put my tank on a timer for 6 hours a day. I already have the light on for 6-7 hours a day and it gets some but minimal light for a couple windows. I usually turn the light on around noon and turn it off around 6-7. Would that time range be best or should I make it so it comes on around 1-2 and on until 8-9? I know fish have a day and night cycle so I don't want to screw them up too much or anything. When the light is off it's kind of like an early morning look more dark than light. Would this be good enough for them until 1-2 when the light came on and is suddenly brighter and stays brighter till later in the evening? I'm probably over thinking this but any help would be great. Thanks.
Not sure if that will help. Your ambient light will have little effect on plant growth unless it's directly hitting tank. I think 10 hours is max needed for light for plant growth. Do you have live plants?
Thanks Gwen. I do have live plants in my tank. I have an Amazon sword, wendtii crypt, anubius, ludwigia and compact hygro. I know that there's not going to be enough ambient light for them during the day but I do have a slight algae problem so less light would probably be good. I was just mainly worried about the fish because I don't want it to be too dark for them for too long.
Light and dark in the tropics is constant, and that is the more important issue here. As long as the fish have a reasonable period of total darkness--by which I mean, complete dark, no daylight, no room lights, no moonlight, nothing--of several hours they will be fine. If you never turned on the tank lights, and the room just had ambient daylight, your fish would be in "heaven." They don't need much if any light, and in most of their native waters it is very dim. |The day/night contrast is the critical thing.
My fish room gets daylight during the morning, through closed blinds, but the fish are awake and to them it is day. The tank lights come on at noon, and remain on for 9 hours until 9 pm; this schedule is solely for the benefit of the plants to prevent algae inctreasing. There is a room light that comes on just before 9 pm and remains on for an hour, to provide a "dusk" type period. Then the fish have total darkness until dawn, which varies from 7-10 hours summer/winter.
Thanks Byron that's the main thing I was wondering. They do get complete darkness for a while at night and as long as the ambient light is good enough then I won't really worry about it. They are definitely active while there's just ambient light I just wasn't sure if they knew it was day time or were just active cause they slept long enough.
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