Red Lights?

[sanangelosaltfish1]

I watch my tank at night with 2 red 20 watt bulbs and someone wrote and said red bulbs promote alge growth is that right has anyone else heard this? and do you think that leaving 2 20 watt red lights on for at the longest an hour is bad?

 

[reefchic]

Plants and algae use more of the red end of the light spectrum to grow while corals use mostly the blue end to grow. Maybe try an actinic bulb which simulates dusk.

 

[joe's reefer]

red activates a algea bloom usually if left on too long