Dimming LED lightning

[Pixburgh]

I have an arctic t-247 light for my 40 gallon breeder. I have seen that it's a good idea to slowly raise the percentage as to not bleach corals etc. any rule of thumb for how slowly it should be raised and at what percentage do I start at? Is this also true for acclimating fish to the lighting as well?

 

[Reefing Madness]

Most would start out at like 30% and reaise it 10% every week until desired lighting is reached.
You don't have to worry about acclimating the fish to the light.

 

[Pixburgh]

Ok now is that 30% for blue AND white or 30% for both combined ?

 

[Reefing Madness]

Id start out with 30 om both, then when you gdt it up a bit you can fiddle with what color you want to dominate.

 

[Pixburgh]

Sounds good. Now do I need to go down to 30% each time I add a coral?

 

[Reefing Madness]

Depends on the coral, but in a nut shell, yes. Or you could put the coral in a shaded portion of the tank at the bottom, and slowly bring it out into more light each week.