Tank of the Month 🏆
- Feb 25, 2009
- Reaction score
The lights are on 7:30 - 8:30 am (1 hour)
Then about 1:30pm till 10pm
This is not good. You want one continuous period of light (the "daylight") both for plants but especially for fish. Second, the duration is too long and bound to cause problem algae in time, as indeed it may have already. I would go down to an 8-hour continuous period, and after a couple weeks if algae increases, reduce another hour.
The continuous period can be any time, normally when you are most often hoe to enjoy the aquarium. Just make sure it is continuous, and there is ambient room light when the tank light comes on and goes off. This is critical to avoid shocking the fish. The aim is to provide light the plants can use, but no more. This is governed by the nutrient availability. The balance of the two if correct will thwart problem algae.