corals and anemones can adapt to an environement.......but remember that in the nature they are settled in these places..........since they are Larvae.......
in aquarium this adaptation is very slow.......and in many cases this never happens.........
my approach in this subject is to give to corals and anemones only the Optimum......
so.......the organisms do not have to adapt.....
healthy Anemones and Corals needs adequated PAR values..........
I was reading some articles about PAR.......and the optimum PAR reading is between 200-400 micro mols..........
above 400 micromols photosynthesis stops.......and under 200 micromols the photosynthesis do not start...........
this is the first point to consider.........
another point is PAR distribution over the tank........
The Quality of the Spectrum do not have to be neglected........the PUR...........(the two peaks of the PAR)...........one at 345 nm........(UV -Blue peak)............and the other at 675nm (Red peak).......
maybe a good percentage is about 15-20% red emitters........something like this.....
the PUR values came from the quality of your LED emitter............the fixture have to be constructed according these two peaks of the PAR........
and then you have to regulate the intensity..........with a PAR meter......not exceeding 400 micromols..........and not under 200 micromols.......
check this vÃdeo.....
https://www.youtube.com/watch?v=-TvQQYAkSOo