Should a "Moonlight" dim blue light be left on overnight

[sassyonmane]

Was wondering if leaving on a dim blue light overnight was good for the reef or bad for it, found information about how it makes a natural lighting cycle but also found posts about how its bad for the fish and corals and not good for them at all, all the forums and posts were like 3-7 years ago so im wondering if maybe theres been more research?

 

[Paul B]

It would not hurt. The sea is never completely dark due to stars and the moon. I have a light on my algae scrubber all night and it has been on for about 6 years. The fish haven't complained yet.

 

[Mr. Mojo Rising]

I've never left a night light for my reef

 

[RedReefer]

No lights left on in the display overnight. Same as Paul I leave my sump chaeto light on all night.

 

[VintageReefer]

It won’t cause harm
Personal preference, up to you

 

[JonoH]

I use the AI moon function.
I think it works really well personally, follows the moon phase to a degree, some sometimes the tanks completely dark, and other times it’s not.

Also makes the tank a good night light for my kids

 

[p1u5h13r4m24]

I personally wouldn’t. I use to have algae issues, cyano in particular. I did everything to get rid of them. Eventually I learned my lights were on too long. Not exactly sure of the science but this is what I got. After some hours your corals stop consuming nutrients when that happens there’s no competition for nuisance algae and bacteria.

 

[sassyonmane]

Okay thanks guys