Gasman, can you help me out?
Gasman, can you help me out?
I have a DIY LED setup over my 90g using Cree XR-E Cool Whites and Royal Blues. There's also 8 XR-E Reds that I used for aesthetic purposes for sunrise, noon, and sunset. I read somewhere that red is a really bad light to expose SPS to after building and installing the fixture.
Initialy, I bleached several corals and turned the LED's down so that the corals would recover, which they did. However, I've some ORA frags that are going from blue or purple to brown at the tips. Too much light? Not enough? PAR is about 315-350 where they are with the LED's at 100%. Probably at around 220 or so now. Photoperiod is from 0530-2130, with the LED's ramping to 20% 0530-0730, ramping to 45% 0730-0930, and then staying at 45% until 1830, which then ramps down over the next 3.5 hrs.
Specifically, from 930 to 1830 my whites are at 45% and my blues are at 55%. My reds were running at 50% for 2 hours at noon, and spiking to 70% and back to zero at sunrise and sunset. Another member has been helping me and suggested that a) my day is too long, and b) use purple or violet vs. red.
My optics are 70 degree; the reds are 80 degree. Here's my PAR readings:
All at 100%
Blue and white at 100%
Questions are, how much should my blue and white outputs be, and how long should my day really be? What am I doing wrong that's turning the corals brown; water qual is unchanged; added EcoTech MP40 ES's X 2 to the tank.
Your tanks look great; where I want to get to. Please advise your opinions or concerns.
Regards,
Kev
Gasman, can you help me out?
I have a DIY LED setup over my 90g using Cree XR-E Cool Whites and Royal Blues. There's also 8 XR-E Reds that I used for aesthetic purposes for sunrise, noon, and sunset. I read somewhere that red is a really bad light to expose SPS to after building and installing the fixture.
Initialy, I bleached several corals and turned the LED's down so that the corals would recover, which they did. However, I've some ORA frags that are going from blue or purple to brown at the tips. Too much light? Not enough? PAR is about 315-350 where they are with the LED's at 100%. Probably at around 220 or so now. Photoperiod is from 0530-2130, with the LED's ramping to 20% 0530-0730, ramping to 45% 0730-0930, and then staying at 45% until 1830, which then ramps down over the next 3.5 hrs.
Specifically, from 930 to 1830 my whites are at 45% and my blues are at 55%. My reds were running at 50% for 2 hours at noon, and spiking to 70% and back to zero at sunrise and sunset. Another member has been helping me and suggested that a) my day is too long, and b) use purple or violet vs. red.
My optics are 70 degree; the reds are 80 degree. Here's my PAR readings:
All at 100%

Blue and white at 100%

Questions are, how much should my blue and white outputs be, and how long should my day really be? What am I doing wrong that's turning the corals brown; water qual is unchanged; added EcoTech MP40 ES's X 2 to the tank.
Your tanks look great; where I want to get to. Please advise your opinions or concerns.
Regards,
Kev
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