Blue LEDs

[Batesy82]

I am thinking of making a DIY light to hang over my tank made up of blue LEDs to simulate moonlight. I would be using my regular T5HO on its normal schedule. The blue LED would simply be a 'for effect' night light to be used when we're around the tank at night, not for regular use.

Is there any issues with using a blue light in a planted tank that anyone knows of? Does it encourage algae growth etc etc?

 

[mfdrookie516]

No, especially not at the amount of light needed for the moonlight effect. If you were going crazy with some super powerful LED's, you *might* run in to issues with algae, but since they're just barely going to put any light in there at all, you won't see any issues.

 

[fort384]

Agreed. I also retrofitted LEDs into a t5ho fixture for exactly the same thing you are going for. It looked great at night.