gnashty;619440 wrote: allright guys - now that i see some pics Id like to know what you think about how many I would need to cover a 180? 72x24x24. If I could do 3 then it seems worth it. are there large ballast? my canopy nor stand could accomodate a large, hot ballast..
Edit: Just got home and tank was at 82.9....I underestimated the effects of my lighting heat on this smaller tank...and my canopy isnt even on yet - its open top...these may be in my future sooner than I thought.
Gary, I answered in PM but thought I would also post my answer here.
The 70 degre lenses are $25 for each module, so it would be $75 for three and they have to be ordered directly through AI.
There is no ballast. Each module has it's own powersupply set which consists of the basic computer style transformer with AC plug and a long thin DC wire that goes to the module. There is another long thin data cord that goes from the controller to the first module and then short data cables daisy-chained to the next and then the next.
Those were the easy questions. The rail kits come with legs that hold the modules just a couple of inches off the tank which might be good in your application but I personally don't like the four individual legs since they don't let the whole thing slide easily making it difficult to get into the tank.
I really don't have experience enough to say whether three would be enough but in my opinion I don't think so if you can't raise the units at least 12 inches off the water to get the light spread even with all 70 degree optics. There are two excellent threads on RC with lots of examples of different sized tanks and applications with their results that you would definitely want to check out.
Page 52 of this thread has some basic guidelines for how many units are needed:
http://www.reefcentral.com/forums/showthread.php?t=1841197&page=52">http://www.reefcentral.com/forums/showthread.php?t=1841197&page=52</a>
And this thread has some applications information:
[IMG]http://www.reefcentral.com/forums/showthread.php?t=1963379">http://www.reefcentral.com/forums/showthread.php?t=1963379</a>
I hope this helps and I am willing to talk about these at any time, I'm just not smart enough to have the answers. :)