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Unread 11/14/2008, 02:21 PM   #826
melev
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Quote:
Originally posted by ds4x4
17" is bulb height from the top water, give or take an inch
Yes, 16 to 18" from the bulb to the water.

With your tank only being 24" wide, the minis would be better suited. The large reflector is 20" in diameter, and I'm using them over a tank that is 30" wide.


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Unread 11/14/2008, 04:37 PM   #827
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I want to try 2 LB minis on my 110G 60x18x24 SPS tank. The big ones seem like a bad idea with a 18inch wide tank.

Will 2 LBs be enough? I currently run 3 250W bulbs using sub par reflectors.


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Unread 11/14/2008, 04:46 PM   #828
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Quote:
Originally posted by brshriver
I want to try 2 LB minis on my 110G 60x18x24 SPS tank. The big ones seem like a bad idea with a 18inch wide tank.

Will 2 LBs be enough? I currently run 3 250W bulbs using sub par reflectors.
Your best off with 3 LB minis


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Unread 11/14/2008, 05:09 PM   #829
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what is the expected coverage area for the minis?


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Unread 11/14/2008, 09:58 PM   #830
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Quote:
Originally posted by brshriver
what is the expected coverage area for the minis?
About an optimal 24" x 24" area hung at 15 inches (bulb to water surface).


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Unread 11/14/2008, 10:12 PM   #831
cagri
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here is my set up with 76 length and 37 width and 29 height.
bulbs are about 17 - 18 inches off the surface, and I do not use a chiller.

The pictures are very accurate representation of reeflux 12K 400 Watt bulbs on coralvue with large lumenbrights 18 inch off the surface.








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Unread 11/14/2008, 11:00 PM   #832
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That looks good to me.


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Unread 11/17/2008, 10:06 PM   #833
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coryjones,
I realy like the look of your pendents and light track. What type of paint did you use? Is it made from PVC? Any problem with the heat on the paint or track?

I am thinking about building something similar.
Dave


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Unread 11/17/2008, 10:21 PM   #834
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has anyone safely put a moon light of some kind on a 250 watt fixture? I was thinking of buying a moonlight that bends so I could aim it up into the lumen bright. Didn't know if it'd take the heat.


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224 gallon acrylic, MP 60, 2 jaebo pumps, w 80 gal. sump, octopus extreme 300 skimmer, uv 25IL, 2 radion, aquatic life 12 bulb T5 fixture

Current Tank Info: 224 acrylic, 80 gallon custom sump, Deltec skimmer, lifereef calcium reactor, radions
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Unread 11/18/2008, 05:22 AM   #835
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Quote:
Originally posted by volivier
has anyone safely put a moon light of some kind on a 250 watt fixture? I was thinking of buying a moonlight that bends so I could aim it up into the lumen bright. Didn't know if it'd take the heat.
I put the "R2 Solutions Extreme Moonlight" over mine, but strapped them right to the backside of the mogul. I tried aiming them into the reflector but found the bulb was blocking most of the light, plus they have killer spread anyway. I will take a pic when I get home later tonight (9-10pm'ish).



Last edited by Fuzznutz; 11/18/2008 at 05:30 AM.
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Unread 11/18/2008, 01:57 PM   #836
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i have a 36x24x20 tank. do you think one lumenbright large at about 16" above the water will be sufficient?

i was going to go with the 250w


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Unread 11/18/2008, 02:31 PM   #837
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18" from the bulb to the water would work.


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Unread 11/18/2008, 08:50 PM   #838
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Any reason to keep the glass lens on the finished pendant? Since the bottom of fixture is so high above water, the amount of salt spray is probably minimal. Right? Also the heat transfer is probably pretty similar with and without lens or maybe not? I guess I hesitate to use lens because it decreases the PAR reaching tank but if it helps decrease heat transfer to water then it may be worth it since my chiller won't run as much.

I'm getting ready to buy 3 LB's and was debating getting the reflector or the finished pendant since it comes with a glass lens.

Any input would be greatly appreciated.


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Unread 11/18/2008, 08:58 PM   #839
ds4x4
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Marc (melev) showed that there is very little PAR loss from using the glass.. if you plan on removing the glass might as well get the unfinished.. i would personally keep the glass if it were me.


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Unread 11/18/2008, 10:07 PM   #840
Fuzznutz
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Not the best pic of the moonlights in action, but you can see the spread they throw out.

And a few pics of my tank...

Reeflux 12k by themselves


Reeflux 12k with 2 Giessmann Actinic+ T5s


For fun...my confused False Perc...loves the Pulsing Xenia! *sigh* tank-raised fish




Last edited by Fuzznutz; 11/18/2008 at 10:14 PM.
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Unread 11/19/2008, 12:16 AM   #841
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The reason I bought mine with glass was because I wanted my high dollar reflectors to last a long time and stay clean. The drop in PAR was almost non-existent, so there was no reason to avoid the glass.


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Unread 11/19/2008, 07:32 AM   #842
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Thanks for the input. I think I will go with finished pendants with glass lens since they won't affect PAR and will probably help prevent radiant heat transfer to water column. Now if I can a vendor who has them in stock....


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Unread 11/19/2008, 09:42 AM   #843
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Check with Mike at Reef Specialty, He should have them in stock.


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Unread 11/19/2008, 06:37 PM   #844
bradw6860
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Hi guys well, I was going to get a lb large pendant to go over a 30" cube but the supplier in Australia that got them in was given only mini's even though they paid for some large as well.... naughty coralvue.

Anyway The large lb's will not be in until March 09!!!

My question is would a mini be good enough for the tank?? 250w the spread be ok? or would it be best to get a 24" cube instead?

Cheers
Brad


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Unread 11/19/2008, 08:19 PM   #845
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I would ask if you can use the smaller one now and trade it in for what you requested when they arrive with no additional cost. Making you wait 4 months is rather unfair.


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Unread 11/20/2008, 10:17 AM   #846
brshriver
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quote:
--------------------------------------------------------------------------------
Originally posted by brshriver
I want to try 2 LB minis on my 110G 60x18x24 SPS tank. The big ones seem like a bad idea with a 18inch wide tank.

Will 2 LBs be enough? I currently run 3 250W bulbs using sub par reflectors.
--------------------------------------------------------------------------------


Quote:
Originally posted by JRaquatics
Your best off with 3 LB minis
Two large LBs would cover a 60x30x24 tank righ? So if I did not mind the light bleeding over the front of the 18 inch wide tank, I should be able to adequately light the tank with 2 large LBs. Is this correct? It is an SPS tank.

I should put some house plants in front of the tank


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Unread 11/20/2008, 10:51 AM   #847
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Quote:
Originally posted by brshriver
quote:
--------------------------------------------------------------------------------
Originally posted by brshriver
I want to try 2 LB minis on my 110G 60x18x24 SPS tank. The big ones seem like a bad idea with a 18inch wide tank.

Will 2 LBs be enough? I currently run 3 250W bulbs using sub par reflectors.
--------------------------------------------------------------------------------




Two large LBs would cover a 60x30x24 tank righ? So if I did not mind the light bleeding over the front of the 18 inch wide tank, I should be able to adequately light the tank with 2 large LBs. Is this correct? It is an SPS tank.

I should put some house plants in front of the tank
Not optimal but can be done. You just really don't benefit from these reflectors this way. You will loose a lot of your light and par # won't be as great in the deeper parts of your tank. Why don't you want to use 3 LB minis?


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Unread 11/20/2008, 11:05 AM   #848
brshriver
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Quote:
Originally posted by JRaquatics
Not optimal but can be done. You just really don't benefit from these reflectors this way. You will loose a lot of your light and par # won't be as great in the deeper parts of your tank. Why don't you want to use 3 LB minis?
I am seeing if I can avoid the extra 250W electric usage.

I am currently running 3 250W bulbs over the tank and my PAR readings are not that impressive due to two factors: the quality of the reflectors and the matching of bulbs to ballasts (which I am fixing). I was thinking that if I switched to 2 LBs I would actually get better par readings in my tank than I currently do with three bulbs, even if some light is bleeding over the front of the tank. 5ft is just a bad length. Currently my PAR readings with new bulbs drops under 300 just under the surface of the water. Readings are with an Apogee meter that is about 1 year old.


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Unread 11/20/2008, 11:09 AM   #849
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Quote:
Originally posted by brshriver
I am seeing if I can avoid the extra 250W electric usage.

I am currently running 3 250W bulbs over the tank and my PAR readings are not that impressive due to two factors: the quality of the reflectors and the matching of bulbs to ballasts (which I am fixing). I was thinking that if I switched to 2 LBs I would actually get better par readings in my tank than I currently do with three bulbs, even if some light is bleeding over the front of the tank. 5ft is just a bad length. Currently my PAR readings with new bulbs drops under 300 just under the surface of the water. Readings are with an Apogee meter that is about 1 year old.
I see. Have you considered the LB mine wides? That might be a better option than the LB larges. I know Mike at reef Specialty now has them over his personal tank and likes the extra spread but still containing the light for optimal water penetration.


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Unread 11/20/2008, 12:48 PM   #850
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I did not know they were out. Mounting height is not an issue in my case, just the odd dimensions of the tank. 18 wide and 60 long. The 18 wide would indicate a lower mounting height while the 60 wide would indicate 3 bulbs or higher mounting heights.

Do they still get similar PAR readings, just at a lower height?


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