Purple Nana Color Change

[Delphinus]

For the most part I quite agree with Brad, with one itty-bitty tiny exception:

Originally Posted by reef_raf

but I don't feel color temp has a big impact.

I think this could quite possibly be true for many corals if not the majority, but certainly not all of them.

I have an acropora, the first one I ever owned which has been with me through thick and thin and lived through temperature disasters, fresh water float valve disasters, high nitrate disasters, etc. etc. Anyways when it is under 10000K halide lights (175W), it is an amazing colour of purple with green highlights. Under 6500K halide lights supplemented with actinics .... it is pure brown. Oh, the actinics give it a greenish tint but take away the actinics and all you have is a ... coral the colour of poo. Moving it to under the Iwasaki's is the biggest mistake I ever made in terms of this one corals colour. Other corals in the tank have nice colouration, in particular I'm very happy with the pink/purple of my cats paw and the yellow of my cap, but come to think of it I also have a yellow acro which is slowly turning into the colour of poo. I've still saving my meager pennies to switch to Radiums when the Iwasaki's are spent, we'll see where things go after that.

I will try to see if I can later post some pictures of the brown acro in one tank, and the keen purple frags thereof that are in a different tank that is lit by nothing but 10K/175's.