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thaitopher
03/14/2017, 08:49 PM
Thinking about adding torch, frogspawn, star polyps to my 20 gallon nano. What are the general PAR requirements for these guys?


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tc2007
03/14/2017, 09:05 PM
Well star polyps will be fine in low light. The others will be good in medium light. Not sure about exact par.

The Kahnasaur
03/14/2017, 09:09 PM
Euphyllia can handle anything from low to high light(if acclimated slowly). Gentle flow is more important for them. What lighting do you have?

thaitopher
03/14/2017, 09:12 PM
Euphyllia can handle anything from low to high light(if acclimated slowly). Gentle flow is more important for them. What lighting do you have?



Fluval Sea 2.0 24,000 k LED.


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thaitopher
03/14/2017, 09:13 PM
Euphyllia can handle anything from low to high light(if acclimated slowly). Gentle flow is more important for them. What lighting do you have?



I get 200 PAR in middle of tank and 50 PAR at bottom.369607


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Agostinone
03/14/2017, 09:13 PM
I have found various sources of data on this and it's not unusual for them to disagree a bit. Take a look at Vivid aquariums, he shares some general PAR numbers for his coral. That should give you a general target.

From my experience and what I read on RC it seems there is a rather forgiving range of lighting that many LPS will tolerate.

thaitopher
03/14/2017, 09:15 PM
I have found various sources of data on this and it's not unusual for them to disagree a bit. Take a look at Vivid aquariums, he shares some general PAR numbers for his coral. That should give you a general target.

From my experience and what I read on RC it seems there is a rather forgiving range of lighting that many LPS will tolerate.



Good to hear. For LPS with higher lighting requirements would keeping the light on for longer periods help?


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Agostinone
03/14/2017, 10:57 PM
Trying to compensate for lack of light intensity by increasing duration is a creative idea. I don't have any experience with that. The experience I do have is that I needed to reduce my photo period to address an algae issue one time so that is one thing to consider.

Sambo107
03/15/2017, 02:57 AM
LPS generally like a medium light so about mid tank which normally means about 100-200 par would be a good range as long as you acclimated them slowly. But for lobos and brains i would keep on sand bed in about 75 par or maybe less.

The Kahnasaur
03/15/2017, 04:14 AM
Your PAR numbers will handle the corals you've listed.

I've read studies on different photo periods for corals and while it would obviously be different between species, it seems that their photo receptors have a limit to the amount of light they will absorb. I forget what they found the mean time frame to be but I think it was in the 4-5 hr range. So, extending the photo period by leaving your lights on longer would most likely not have the effects you desire. Most algaes on the other hand, would love an extended photo period.

Reef Bass
03/15/2017, 06:29 PM
I keep my Euphyllia between 100 and 250 par and currently run my MHs 7 hours a day.

Running lights longer is not a substitute for higher par.

thaitopher
03/15/2017, 07:24 PM
Your PAR numbers will handle the corals you've listed.

I've read studies on different photo periods for corals and while it would obviously be different between species, it seems that their photo receptors have a limit to the amount of light they will absorb. I forget what they found the mean time frame to be but I think it was in the 4-5 hr range. So, extending the photo period by leaving your lights on longer would most likely not have the effects you desire. Most algaes on the other hand, would love an extended photo period.



Thanks. Good to know.


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RonMidtownStomp
03/17/2017, 01:19 AM
My torch is at about 150 and my three headed bubble coral is at maybe 250 PAR. Both are in what you would probably consider "extremely high flow."

chrisfont23
03/21/2017, 03:52 PM
Here are the par levels on my 90 running a reef breeders photon 48 at 60 pct blue channel / 40 pct white channel.

370083

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pdiehm
03/31/2017, 12:22 PM
Here are the par levels on my 90 running a reef breeders photon 48 at 60 pct blue channel / 40 pct white channel.

370083

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how deep is your 90? I have a 120 long (60x18x26 tall) and have had a godawful time finding the right channel intensities.

chrisfont23
03/31/2017, 12:37 PM
how deep is your 90? I have a 120 long (60x18x26 tall) and have had a godawful time finding the right channel intensities.
28

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jacksonpt
03/31/2017, 12:43 PM
I thought LPS cared more about spectrum than they did intensity of light?

UKMarineGuy
04/05/2017, 08:28 AM
I target 70 par for my acans and around 150' for my euphyllias

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