Kessil light controller graph.

I just posted this in response to another post, but I believe you may use the same, as your depth in the tank is not that much. I would raise the light tell you get a nice full spread and start there.

Well it not the easiest question to answer. I believe a lot of it depends on the height of the lights, because the closer you have them the more focused they seem to get and as you raise them they start to lose that focus and par drop drops because it has increased its spread. I have tried many different and found what works for me the best is 14" above water at a higher intensity 10 hrs. 75% Intensity and 45% Color. With a start of 0 and 5 rises to 40 and 25 in a 1/2 hr then goes to peak, same for Sunset is the same just reverse. For yourself with a Nano I would try the 14 " at 50 Intensity and 45 Color for now as you have no SPS. You sort of can tell when things are too much, your Color on the Corals will start to get a White wash look to them as you add the Intensity and you don't want that. I hope this may be of some help. But observation and slow adjustments are the best way.
 
Looks like I have mine a little close based off of what you said. I'll try to make some adjustments and see how it goes. Thanks for the info
 
IMG_1476912343.772136.jpg
well this is it at 14" off the top of the water. Set the programming to 0 and 5 ramping to 40 and 25 in a half hour and then peaking at 50 and 75 a half hour later for 10 hours. Then the opposite for the end of the day. See what happens [emoji106]
 
You really like that Glass top, if it is not a big deal for you I would remove the Top as it will block some UV light and will also reflect some of the light so you are not getting full light penetration.
 
Yeah I usually don't have it on, but I had to move the tank to my parents house while I was deployed and it kept it cleaner. Lots of dust from tractors and animal hair. When I move the tank back to my place it won't ever be on.
 

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