Irishmike7979
Aquarium Advice Regular
- Joined
- Oct 8, 2011
- Messages
- 89
That's a sweet set up! If mine was against the wall I'd do that but it's on an angle
This is not true. This is opinion.Sps will grow under blue and white leds but youll never achieve the best coloration of an sps without uv
Another reference:
Ultraviolet Light, Marine Aquariums and Coral Reef Aquarium Tank, Stand, Canopy, and Aquarium Filter System
"
Coral Coloration and UV Radiation
It is quite popular to believe that increased coral coloration is a response, at least in part, to UV radiation. Our experiences indicate that some corals will turn green as a response to increased UV. However, we have observed many corals (especially Acroporids, Pocilloporids, etc) exhibiting vivid coloration when maintained for years under conditions of practically no UV (~1 µW UV-A; <1 µW UV-B). Figures 12 and 13 show two Acropora specimens maintained under such low UV levels (however, visible light – PAR – levels were quite high)."
I agree this is my opinion but my opinion is based on an experiment i did using bridgelux leds white and blue vs cree leds white and blue with addition of uv i took a frag from same colony placed one under one light one under the other in the same fragtank within a month the one under the cree fixture was way brighter green with deeper purple tips so this is what led me to that opinion i used bridgelux for about 6 months and since i did this lil test ive switched to the cree fixture so ya its opinion but its what works for me and im just sharing i do believe that sps coral recieve uv light in nature and is beneficial again this is my opinion not backed by anything other than what works for me
And from what you just posted it said they had acros with good color from low uv not no uv
Another reference:
Ultraviolet Light, Marine Aquariums and Coral Reef Aquarium Tank, Stand, Canopy, and Aquarium Filter System
"
Coral Coloration and UV Radiation
It is quite popular to believe that increased coral coloration is a response, at least in part, to UV radiation. Our experiences indicate that some corals will turn green as a response to increased UV. However, we have observed many corals (especially Acroporids, Pocilloporids, etc) exhibiting vivid coloration when maintained for years under conditions of practically no UV (~1 µW UV-A; <1 µW UV-B). Figures 12 and 13 show two Acropora specimens maintained under such low UV levels (however, visible light – PAR – levels were quite high)."
the result, taken from the above link-
"Our experiences suggest that coral coloration is a response to PAR levels, not UV. In short, we find no reason to subject reef aquaria to high UV levels. "
Another reference:
Ultraviolet Light, Marine Aquariums and Coral Reef Aquarium Tank, Stand, Canopy, and Aquarium Filter System
"
Coral Coloration and UV Radiation
It is quite popular to believe that increased coral coloration is a response, at least in part, to UV radiation. Our experiences indicate that some corals will turn green as a response to increased UV. However, we have observed many corals (especially Acroporids, Pocilloporids, etc) exhibiting vivid coloration when maintained for years under conditions of practically no UV (~1 µW UV-A; <1 µW UV-B). Figures 12 and 13 show two Acropora specimens maintained under such low UV levels (however, visible light – PAR – levels were quite high)."
the result, taken from the above link-
"Our experiences suggest that coral coloration is a response to PAR levels, not UV. In short, we find no reason to subject reef aquaria to high UV levels. "
Sorry I didn't see this until today, but RTN is a mystery. It happens from many different things. The most common being Alk swings and temp swings.