led help

jorge0912 · Nov 17, 2017

my aquarium is led is to bright even the blue more ligth blue then royal blue love the look but is this good for the corals ??
Channel 1:18 x Cool white(10000-16000K), 6 x Neutral whites(6500-7500K), 2 x Green 520nm and 2 x Deep red 660nm
Channel 2:14 x Royal Blue 450nm, 9 x Blue 470nm, 2 x Violet 420nm and 2 x UV 400nm

running them at
channel 1 ..25%
channel 2 ..50%

saltyfilmfolks · Nov 18, 2017

https://www.reef2reef.com/threads/lighting-upgrade-with-a-lux-meter-saltyfilmfolks.248417/
$15 lux meter.
https://www.amazon.com/dp/B00LSFR0F...t=&hvlocphy=9061183&hvtargid=pla-505585159192

On most tanks about 18 to 24 in deep you probably want about 400 par at the top of the tank. This is a med light tank.

With led with not too much blue , 6000lux is around 100 par. So 2400 lux is about 400 par. But I'd start at around 18,000 lux. See how it goes for a week or two. Then bump it anothe 50-100 par or lower it if you feel it's needed.

Some coral are generalist , even in the same family. A digitata can be lower and higher light. So can all sps , zoas and other softies. And there are also true low light corals in each family.
Be knowing the set par in your tank you can make coral buying choices too.