I think this mostly depends on what exactly you have in there. I run my lights on for 14 and off for 10. I would venture to guess your safest bet would be to time it with sunup and sundown. At least until someone has a better idea, it would help as I mentioned to know what kind of plants and fish you have just in case there is something that requires something out of the ordinary.
I have all low light plants in my tanks and my lights in the 55 are two 6500 daylight bulbs on a timer that is on 10 hours a day and off 14 and it works well with my tank. What kind of bulbs do you have?
As previous member's responses have mentioned, the answer to your question depends upon several things. Plants need light in balance with available nutrients in order to photosynthesize (grow), and if any one essential is lacking, they can't. So the light duration must balance the nutrients. If light exceeds the available nutrients, algae will take advantage. Light should always be the limiting factor in plant growth to avoid this.
I would use a timer and have the light on during normal viewing periods, probably trying 12 hours to start with, and monitoring plant response and algae. If the latter increases, reduce the duration by one hour, and so on. We could go into more detail if we knew your light specs, plant species and number, and fertilization data.
Byron.
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
Tropical Fish Keeping
597.8K posts
83.7K members
Since 2006
forum community dedicated to tropical fish owners and enthusiasts. Come join the discussion about species,breeding, health, behavior, aquariums, adopting, care, classifieds, and more! Open to fish, plants and reptiles living in freshwater or saltwater environments.