Too much light?
Let’s briefly discuss lighting.
The maximum amount of time your lights should be on, for any tank, is 10 hours. Any more than that is going to be unused by your plants, except in tanks that are really being pushed to the limit.
Low-tech tanks need less light, between 6-8 hours is usually sufficient.
Some hobbyists like to have a “siesta” period for their lighting – a break in between lighting periods. While this does nothing to fight algae, it does allow for viewing of the aquarium at morning and evening without an excessive photoperiod, and won’t harm your plants (unless the break is so long the plants aren’t able to use the fertiliser nutrients they are being given).
The intensity of your light should also be considered. Algae will thrive in a tank that is intensely lit if you don’t have the plant mass and nutrients to use the light being given. Bright lighting should be used only in tanks utilising pressurised CO2, where plants are being pushed to their limits.
If you are experiencing an algae outbreak with a photoperiod longer than 6-8 hours, consider reducing your lighting time by one hour and observe for any changes over a few weeks.
From The LCA Team
Every Solution For Your Aquarium.