I found the article @:
http://www.reefhobbyistmagazine.com/downloads/pdf/version27.pdf
Hope that's the one… :nerd:
It says:
"8:30 am - 11:30 am (20,000K metal halides)
11:15 am - 12:30 pm (Super Actinic VHOs)
12:15 pm - 9:30 pm (Blue LEDs)."
Here we basically have 3 types of lights: metal halides, fluorescent tubes and LEDs.
Well…
In fact, there are lots of options for those timers.
The options for the types of lights used are also many...
The use of 2 of the 3 types of light used (listed above) would be more than enough for any zoa/coral system, in regards to light alone.
The use of one of them could hit the optimal environment for zoas, and IMO that's T5 HOs, talking about the fluorescent type. VHOs too.
I'm just writing this so people don't think they need all 3 types of lights to have a very successful zoa tank!!
I've seen all kinds of zoa tanks with nothing close to that type of lighting and with stunning zoas all over the tank for many years!! So… light isn't everything, really.
My systems today have only T5s and they are doing just great! I miss the shimmering of my MHs, but I'm happy I don't have to deal with the extra heat.:bigsmile:
Very nice subject and the article is simple, but nice and informative!!! Well done!
Thanks for the input!
Grandis.