The minum PAR fos SPS

[frank88]

In this article are the minimum level of Par for maintain SPS recommended by aquarists:
http://www.advancedaquarist.com/2006/1/lines/view

Table 2: Aquarist's Lighting Recommendations Coral PAR (µmol·m²·sec)

Stylophora 700 - 1000
Pocillopora 600 - 900
Acropora 600 - 1000
Montipora 400 - 800
Seriatopora 500-900

In our tanks... how do you ensure coverage total > 500-PAR for the entire volume?
The metal alide 400 in Lumenarc III ,for example, have a peak only in the area under the bulb.
A 9 inch below the surface of the light loses 45% of PAR below the bulb ... ...
Staying at 9 inches below the surface ..
If you already measure the PAR to 9 inches to the right or to the left of the line of the bulb we have a loss of 70% ...

...so what?

 

[JAustin]

Those corals do not need that much PAR....WOW.

Almost all of my corals get 300-450 PAR and do very well in growth and they have great coloration. I have all the species listed above in my 120G except for Pocillopora.

 

[nauticac4]

Read a little more carefully. The way I read the chart that your referring to is that is the common thought of what those corals need. The first chart is actually needs.

If those corals "needed" that kind of light there would be way fewer successful tanks.

 

[frank88]

Read a little more carefully. The way I read the chart that your referring to is that is the common thought of what those corals need. The first chart is actually needs.

If those corals "needed" that kind of light there would be way fewer successful tanks.

on the table 2:
....Aquarist's Lighting Recommendations Coral PAR (µmol·m²·sec)
exaggerated?:eek2:

So,if you were to rewrite this list how would you write it?

Stylophora.....
Pocillopora.....
Acropora.....
Montipora.....
Seriatopora......

????????????

 

[maestro]

Those levels are crazy, Monti caps for example do best in about 100-200 tops

I would generally re classify that is

low light 0-100 PAR
medium 100-300
High 300-600
very high 600+


Ive generally found acros like 300-400 PAR in home aquaria.

 

[frank88]

Those levels are crazy, Monti caps for example do best in about 100-200 tops

I would generally re classify that is

low light 0-100 PAR
medium 100-300
High 300-600
very high 600+


Ive generally found acros like 300-400 PAR in home aquaria.

Thank you
But How could convert the scale of J. Sprung..
0 - 10 ?

10 = 600 PAR for you, or more?

 

[maestro]

Theres no need for the rolleyes smiley, I was trying to help you out

you want to convert the sprung table into numbers?

Well ime no coral needs more than 400 PAR although some very high light corals like stylos will tolerate upto 600 PAR

so a 10 on sprungs scale would be 400+ par ime.

 

[frank88]

Theres no need for the rolleyes smiley, I was trying to help you out

you want to convert the sprung table into numbers?

Well ime no coral needs more than 400 PAR although some very high light corals like stylos will tolerate upto 600 PAR

so a 10 on sprungs scale would be 400+ par ime.

10 = 400 or 600
and 1?

 

[StonyReefer]

I keep 12 Acro colonies or so under 4x54w t5. I guarantee my par isnt anywhere near 500-600 par.

 

[frank88]

So,if you were to rewrite this list how would you write it?

Julian Sprung in "Corals" use a range 0 - 10..
10 = ?
1 = ?

 

[frank88]

nothing ?.....
as you could convert the Sprung range 0-10 in PAR value?

 

[Reef Bass]

I've been fiddling with a par meter, and those initial numbers are very high, bordering on almost unachievable with the equipment most use in a tank with any depth.

I'm not familiar with Sprung numbers, but if it is a straight linear scale, maybe 1 Sprung = 60-70 par, so 10 Sprung would be 600-700 par.

However you choose to describe the par values, maestro's 4 tier breakdown looks pretty good for home reef aquaria.

 

[JAustin]

I don't get why your interested in a 0-10 value. I'm not meaning any kind of attitude, i'm being open here. If you have sps, give them 200-400 par and your fine.

 

[Acrotrdco]

Although those SPS would be doing okay with 400-ish PAR, but if you want to improve coloration, 500-600 is really the minimum. Some Acro's like staghorn love 800-1000 PAR, with really noticeable improvement on coloration over 500-600 PAR (I kept mine in the area around 800-900 PAR)

This is the overall PAR values of my tank, if you want to see more, you can check out my tank build thread.

http://www.reefcentral.com/forums/showthread.php?t=1929512&page=4

 

[frank88]

I've been fiddling with a par meter, and those initial numbers are very high, bordering on almost unachievable with the equipment most use in a tank with any depth.

I'm not familiar with Sprung numbers, but if it is a straight linear scale, maybe 1 Sprung = 60-70 par, so 10 Sprung would be 600-700 par.

However you choose to describe the par values, maestro's 4 tier breakdown looks pretty good for home reef aquaria.

Par in nature have a peak in 2200 PAR on the water surface;
the average of 12 hours is 1500 par on the surface

At 6 inch are 1900 peak and 1300 in average par....:eek2: and corals live in it well ...700 is half..:worried:
700

 

[frank88]

I don't get why your interested in a 0-10 value. I'm not meaning any kind of attitude, i'm being open here. If you have sps, give them 200-400 par and your fine.

I need to compare with the data of our lighting provided to write a article for Italian Forum :wavehand:

 

[jdizzle707]

Maybe shallow tanks are better for SPSs?

 

[dixiedog]

I don't get why your interested in a 0-10 value. I'm not meaning any kind of attitude, i'm being open here. If you have sps, give them 200-400 par and your fine.

I'm with you and maestro. My highest PAR is maybe 500 and I have more problems with bleaching things than anything else - at all levels in the tank.

I know some GREAT reefers who keep GREAT corals under much more PAR than I have, but I sure don't know how they do it.

 

[frank88]

I'm with you and maestro. My highest PAR is maybe 500 and I have more problems with bleaching things than anything else - at all levels in the tank.

I know some GREAT reefers who keep GREAT corals under much more PAR than I have, but I sure don't know how they do it.

500 PAR how deep?
In nature are a peak of 2200 par...on the surface...

 

[dixiedog]

500 PAR how deep?
...

At the top of my highest SPS, which is about 3" below the surface.