How long should aquarium lights remain on daily?

The appropriate duration for aquarium lighting creates a balance between the health of your fish and the maintenance of algae. I found out the need for this balance when I had green water in my first aquarium because of too much light. The various types of aquariums require the proper length of time for lighting. Knowing the demands of the aquariums will minimize the problems and will also keep your aquarium lovely.

Set up automatic timers for reliable lighting schedules. This allows you to regulate lights without having to count on people to turn them on or off while maintaining stability in their cycles. I use programmable LED systems with sunrise/sunset capabilities. Consistency is key in both photoperiods for the fish biology clocks, as well as metabolic processes for the plants.

Steer clear of constant light conditions. Fish need periods of darkness for rest and to relieve stress. Algae will proliferate under continuous light. Replicate a natural system by providing 12-14 hours of darkness every day.

Keep an eye on algae growth as a potential sign of problem lighting. If the surface of your aquarium is green, it is likely due to either too much time or too much intensity. Brown algae are typically a sign of not enough light. Adjust your time gradually, by half an hour a week, until you find a happy medium.

Light requirements can vary seasonally, becoming shorter in the summer due to the presence of ambient light. In contrast, the winter months may become somewhat longer than summer periods. You will be able to adjust your durations based on plant growth rates or fish behavior you may see.

Read the full article: Essential Fish Tank Maintenance Guide for Beginners