Red Light - Good or Bad for Corals?

[Dana Riddle]

Thanks for your answer, so how could I change the seetings of my radions to reverse it? Less blue or less violet /uv? The new frag at the bottom start green also. :-/
I use ati essentials pro actually, could it also be that some trace elements inside made this effect, I saw at an other user home that his colors where also very''metallic''

Which Radion iteration?

 

[Superlightman]

Radion G5

 

[Dana Riddle]

Radion G5

OK - I've got data on the G5. I'll look after turkey wears off.

 

[Superlightman]

OK - I've got data on the G5. I'll look after turkey wears off.

Super thanks actually i run the radion mode a bit modified as i have t5 also

 

[PicassoClown04]

Interesting thread! Currently I am running reds at 53%. Using two AI Prime HDs over a 20 gallon IM peninsula AIO tank, mixed reef. It used to be 13% but I read that red light encourages algae growth in the DT and macroalgae growth when used in a refugium setting; I bought a mangrove and figured that since it’s a plant, it could maybe benefit from the red light

Original Settings and FTS

Post-Mangrove Settings with current FTS

Obviously, I did add a few things between these two shots but there’s still a lot of corals to compare! I have actually noticed a brighter color on many of my corals, and still do not experience issues with nuisance algae except for bubble algae. The bubble problem has not worsened at all due to the increased red light and I was actually able to stop dosing vibrant a few weeks after switching to 53% red.

I am noticing that the anemone splits less often now. It used to be once a month and now it’s once every 2 1/2 to 3 months, no change in parameters or feeding habits during that time. Everything else seems to be growing at a normal rate, except the cloves which have absolutely taken off but I feel that it could just be attributed to the fact that they’re clove polyps which are known for doing that.

Great thread by the way! I wish I’d found it sooner

 

[Superlightman]

Here some exemple of very yellow corals, unfortunately my Foto make it look a bit greenish but in real it looks very yellow. Hope they will keep this colors..

 

[JohnnyBlowfish]

@footgal Curious to know if you have continued to use the higher red light intensity. If so, what have been your observations over these few months?

 

[PicassoClown04]

@footgal Curious to know if you have continued to use the higher red light intensity. If so, what have been your observations over these few months?

Everything looks perfectly fine to me! No ill effects so far and it’s been at least 6 months. The mangroves are loving the redder spectrum and the algae produced is easily managed through a mild vibrant dosing every week or so

 

[JohnnyBlowfish]

Everything looks perfectly fine to me! No ill effects so far and it’s been at least 6 months. The mangroves are loving the redder spectrum and the algae produced is easily managed through a mild vibrant dosing every week or so

That's great. I was really curious to see how it worked out after reading through this thread. Thanks for the reply.

 

[Superlightman]

Red light is maybe not as bad as we think?

 

[Dana Riddle]

My current project examines effects of white ('redder') light v. 'bluer' light, by looking at chlorophyll content.

 

[oreo54]

My current project examines effects of white ('redder') light v. 'bluer' light, by looking at chlorophyll content.

New paper...
CoralStudy

As shown in Table 6, no significant differences in zooxanthellae
density (approximately 4.0 × 107
cells m−2
) or chlorophyll a concentration (approximately
51 µg cm−2
) were noted under different light wavelength conditions. However, in the con-
trol group, the zooxanthellae density decreased to 0.3 × 106
cells m−2
, and the chlorophyll
a concentration dropped to 14 ± 1.33 µg cm−2
. Therefore, although the content of zooxan-
thellae and chlorophyll a in G. columna were not affected by different light wavelengths,
they were notably reduced by the absence of light

 

[Brymac1]

I am of the opinion that the amount of red in most reef lights is not enough to cause bleaching. I run my kessils at 100% on all channels.

 

[Superlightman]

My current project examines effects of white ('redder') light v. 'bluer' light, by looking at chlorophyll content.

Great and what are the first results?

 

[Dana Riddle]

Great and what are the first results?

Too early to tell. This procedure will run for 60 days or so, and then we'll know,

 

[Superlightman]

Since I run white light my ph and alk consumption increase really a lot, so I suppose that the growth is probably to increasing