Quote:
Originally Posted by Atomikk
What I found works amazingly well for my system is to have a slow progression of light intesity and spectrum. I have T5 actinics and 400W Radium 20K. The T5s go on first to ease corals and fish into the day. Then only one of the MHs turns on. After 2 hrs, the second MH turns on, but the T5s turn off. Corals should only be subjected to about 4-5 hrs of intense light (whatever spectrum, 10K-20K). Otherwise they photosaturate, and can recess. After the last MH bulbs turns off, the actincs turn on to again ease the fish/corals into complete darkness.
HTH
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i do the same if you think about it your trying to mimic where it comes from, i start with t5's in the morning then go halides for about 4-5 hours then i use actinics in the evening.its all done by a timer so i dont mess it up.
in my new set up i plan to phase in moon phases and seasonal time differences
cheers