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  1. Hello everyone, Its been a while since I've posted here! Looking at my old pictures, I see now I obviously have a browning problem. So I went to google of course to get to the bottom of it! And got only some questions answered. I have done a ton of forum searches and see that a lot of post about LED's and what not are many years old, and always seem to turn into an argument about "Why you should switch back to MH Lights" Well now that were all in 2017 and know that Coral can in fact thrive under LED's (And some of my corals have almost doubled in size!) lets start a modern conversation about lighting on Shallow Nano Tanks. Perhaps someone has a great link I can read on for this? So here is my question, I am running my Orbit Marine Pro LED at 85% Blue, and 16% white. After some reading, I think I need to raise it up. Browning coral is from too little light and zooxanthellae builds up to feed the coral in place of light correct? And with more intense light, the zooxanthellae will release, and the coral will Color up "Like a Tan" to protect it in a way from the light from what I'm reading, is this also correct? I ask because recently one of my SPS has started bleaching, so I thought it was too much light. so i turned it down about 5% But it is browning... so now I'm thinking its too little. Its also barley grown. However my Octospawn LPS coral has almost doubled in 4 months, and my Plate coral (An sps) and GSP is also growing. So I was under the impression i had enough or possibly too much light... So all I'm after here, is lighting information. More White, more blue? How does this effect Color/Growth & zooxanthellae? I want less brown! I start with 1 hour blue from 0% - 85% over a 30 minute Ramp up, and it runs for 7 hours and ramps back down over 30 minutes to 0%. (Total of 8 hours blue) And my Whites I run 15 minutes after the Blue lights start, and over half an hour ramp to 16%. Then run for 6 hours and ramps back down to 0% over 30 minutes. (Total of 7 hours white) How many hours do you run your lights? What pattern do you run? Blue first then white then blue? Start with white, finish with blue? What are your Light Programs/Percentages? Lets talk LED lights & Coral! P.S. Since everyone always ask about Water conditions, I keep my tank about 77-78 Degrees My Salinity is - 0.025 My calcium is - 415-430 Alk - 9 Nitriates - 0 Nitrates - 0.5 Phosphates - 0 to 0.5 Running Carbon, and Chemi Pure Elite & Skimmer. But Please, lets not turn this to a "Water conditions topic" etc. I see almost all the other lighting post turn away from the lighting For more information on my build, check out my Build Thread in my signature.
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