[PReis]

In November/06 I'd change my aquarium to another local at the house. With a window. Usualy the light (4xT5) period was 11h/day.
After a distraction with the window opened for a weekend, I'd notice the growing of the corals.

I'd would likt to obtain your opinion about it.
Natural vs artificial light.

[charlie]

First off:



Let me direct you here:
Sun light as a daylight.


My opinion:
As was stated in this discussion, your tank must be kept clean, otherwise the possibility looms for an algae outbreak.
How long has this tank been by the window? I would just keep an eye out for algae, and if it looks like you are starting to get some, water changes. water changes!!!!!
Can you tell us a little more about your system?

Glad you are here, hope you enjoy!!!!!