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Unread 12/01/2008, 11:55 AM   #901
JRaquatics
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I would try to have them so they touch in the middle. This should give you optimal lighting by less bleed and more crossover. You should have enough crossover light that you shouldn't see the shadow from the brace. I would try to get the most out of your lighting while still being pleasurable to view. Are those 250s or 175s? Are you planning on keeping SPS?


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Unread 12/01/2008, 12:22 PM   #902
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Quote:
Originally posted by JRaquatics
As for fans I like the 4" variable speed ones by coralvue and or the 4" Ice Cap fans. I would place one on either side and have them both blow inward.
I agree. One or two fans should be fine.


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Unread 12/01/2008, 12:24 PM   #903
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Quote:
Originally posted by obiwanthegoby
Has anyone done any PAR testing with these on a deeper tank, say 30"? with 250 or 400W? HQI?
Yes, I have. My tank is 30" tall, and I have both 250w and 400w bulbs. Here's one picture from the page on my site:




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Unread 12/01/2008, 12:30 PM   #904
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Quote:
Originally posted by JRaquatics
I would try to have them so they touch in the middle. This should give you optimal lighting by less bleed and more crossover. You should have enough crossover light that you shouldn't see the shadow from the brace. I would try to get the most out of your lighting while still being pleasurable to view. Are those 250s or 175s? Are you planning on keeping SPS?
it isnt hard to move them at all! i spent the money to have the lights so i wanna do it right.
the lights are 12k 250w yes i plan on getting SPS


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Unread 12/01/2008, 12:31 PM   #905
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another dumb questiom JR.... should the lights be positioned straight to the front of the tank or should they be kind of pointing to ea other? does it really make a difference?


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Unread 12/01/2008, 12:36 PM   #906
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Originally posted by johnny313
another dumb questiom JR.... should the lights be positioned straight to the front of the tank or should they be kind of pointing to ea other? does it really make a difference?
I honestly don't think it makes a difference with these reflectors.


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Unread 12/01/2008, 12:41 PM   #907
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Thank you! I just picked up my first acro... here is a pic.



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Unread 12/01/2008, 12:43 PM   #908
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I have him about half way to the top of the tank and I have the dimmable ballasts turned down to about 50%.


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Unread 12/01/2008, 12:48 PM   #909
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[QUOTE]Originally posted by melev
[B]Yes, I have. My tank is 30" tall, and I have both 250w and 400w bulbs. Here's one picture from the page on my site:


Melev,

how tall is your sand bed, I'm assuming 6 inches? My tank height will be 29.5 total. Water depth will be at max 26.5 inches on top of the 2 inch sand bed. I don't want to make the jump to 400W bulbs if its not neccesary. Looking at your PAR readings the 400W is about the same as the 250... although its a comparison of a 10K bulb to a 20K bulb so there will be a difference. The original plan was to use 3 250 Watt Reeflux 12K supplemented heavily with T-5's. (possibly six rows of 39 watts). Does anyone think this will be sufficient? Or is the switch to planning for 400 Watts imminent? (stocking plans are clams and SPS)


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Unread 12/01/2008, 12:56 PM   #910
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Originally posted by johnny313
Thank you! I just picked up my first acro... here is a pic.
Nice looking acro. Has good polyp extension.


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Unread 12/01/2008, 01:01 PM   #911
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[QUOTE]Originally posted by obiwanthegoby
[B]
Quote:
Originally posted by melev
Yes, I have. My tank is 30" tall, and I have both 250w and 400w bulbs. Here's one picture from the page on my site:


Melev,

how tall is your sand bed, I'm assuming 6 inches? My tank height will be 29.5 total. Water depth will be at max 26.5 inches on top of the 2 inch sand bed. I don't want to make the jump to 400W bulbs if its not neccesary. Looking at your PAR readings the 400W is about the same as the 250... although its a comparison of a 10K bulb to a 20K bulb so there will be a difference. The original plan was to use 3 250 Watt Reeflux 12K supplemented heavily with T-5's. (possibly six rows of 39 watts). Does anyone think this will be sufficient? Or is the switch to planning for 400 Watts imminent? (stocking plans are clams and SPS)
What are the exact dimensions of your tank? I usually suggest 400 watters for any tank deeper than 30 inches. You might be able to get away with running 10ks 250s with t5 supplementation otherwise clams on a sandbed in a 30" tank may require 400s above them.


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Unread 12/01/2008, 01:01 PM   #912
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JR... I just called RS and he said I have to raise my octo skimmer to 8" of water( its in 10.5" now. he also said to drill a hole in the 90 for relief of water pressure. how big of a hole should i drill? I just removed the 90 and the 6" pc that goes down until I raise it up


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Unread 12/01/2008, 01:03 PM   #913
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Quote:
Originally posted by JRaquatics
What are the exact dimensions of your tank? I usually suggest 400 watters for any tank deeper than 30 inches. You might be able to get away with running 10ks 250s with t5 supplementation otherwise clams on a sandbed in a 30" tank may require 400s above them.
Tank dimensions are 84" X 36" X 29.5"T. Planning for a 1 - 2 inch sand bed.


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Unread 12/01/2008, 01:04 PM   #914
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Quote:
Originally posted by johnny313
JR... I just called RS and he said I have to raise my octo skimmer to 8" of water( its in 10.5" now. he also said to drill a hole in the 90 for relief of water pressure. how big of a hole should i drill? I just removed the 90 and the 6" pc that goes down until I raise it up
1/4 to 5/16ths hole should be fine. Definitely get the skimmer up to at least 9" and optimally as close to 8" as possible.


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Unread 12/01/2008, 01:07 PM   #915
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thanks again


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Unread 12/01/2008, 01:11 PM   #916
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Quote:
Originally posted by obiwanthegoby
Tank dimensions are 84" X 36" X 29.5"T. Planning for a 1 - 2 inch sand bed.
With those dimensions and having 3 LG lumenbrights I would suggest going 400watters for best results. FWIW If you get dimmable ballast you can turn them down if needed. Can you run 250s? sure but I think you may be restricted in the positioning of your clams and SPS.


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Unread 12/01/2008, 01:14 PM   #917
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Quote:
Originally posted by obiwanthegoby
how tall is your sand bed, I'm assuming 6 inches? My tank height will be 29.5 total. Water depth will be at max 26.5 inches on top of the 2 inch sand bed. I don't want to make the jump to 400W bulbs if its not neccesary. Looking at your PAR readings the 400W is about the same as the 250... although its a comparison of a 10K bulb to a 20K bulb so there will be a difference. The original plan was to use 3 250 Watt Reeflux 12K supplemented heavily with T-5's. (possibly six rows of 39 watts). Does anyone think this will be sufficient? Or is the switch to planning for 400 Watts imminent? (stocking plans are clams and SPS)
Here's another picture from that page:



My sandbed is roughly 4" deep. When you take a 30" InterAmerican tank, you have to substract for the 3/4" bottom panel as well as the eurobracing at the top. I think the actual water height from the bottom to the lip of the bracing is 27" to 28" tall, and the water is about 1" under the eurobracing. That is why it looks like 24" to the substrate.


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Unread 12/01/2008, 01:35 PM   #918
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Thanks guys, think I'm going to go with 3 400W Lumen Brights, Reeflux 12K bulbs, Dimmable Ballast, supplemented with 4 rows of 2 X 39W T-5 for the "pop factor". I appreciate your input greatly!


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Unread 12/01/2008, 01:38 PM   #919
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Sounds like your going to have yourself a nice setup. Will you be doing a build thread for your future setup?


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Unread 12/01/2008, 01:42 PM   #920
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Already going... here: http://www.reefcentral.com/forums/sh...readid=1515150

Trying to get a website going also, but work and end of the semester cramming is putting a damper on things.


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Unread 12/01/2008, 03:34 PM   #921
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Quote:
Originally posted by JRaquatics
1/4 to 5/16ths hole should be fine. Definitely get the skimmer up to at least 9" and optimally as close to 8" as possible.
JR, I tried to gety the water level to 8" and its a lil over 7"
the bottom of the pump is 5" under is that ok?


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Unread 12/01/2008, 03:47 PM   #922
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Between 8"and 9" seems to be the sweet spot. I really wouldn't advise running it any less than 8" depth either.


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Unread 12/01/2008, 08:56 PM   #923
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Quote:
Originally posted by JRaquatics
Between 8"and 9" seems to be the sweet spot. I really wouldn't advise running it any less than 8" depth either.
ok JR. skimmer is 8". lights are close together now and i dropped them down to 18". I installed one fan for now. from that one fan I see the temp dropping already
thanks for everything!!!!!


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Unread 12/01/2008, 09:04 PM   #924
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I need some thoughts/help on my lighting... I set up my tank right when the LB were coming out. It's a mixed reef 60x36x30, 12k reeflux 400w w/ LB LARGE 16" above water (bulb @ 19")

The issue is I love LPS (scoly, brain, hammer, lobo) but any lps I put halfway up begins to bleach which is crimping my style.

Another issue is I have corcea clams at the bottom (30" depth) and want sps near the top so I'm concerned about their health.

Would raising the LB/bulbs a few inches even do anything?

Should I just downgrade to 250w and would my clams be ok? (this might open up the ability to add 2-3 actinic T5's)

Is there something else I'm missing? 7month old bulbs now.

Thanks!


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Unread 12/02/2008, 12:40 AM   #925
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Yes, lifting them up higher will help decrease PAR. Or you could try a 250w bulb as you suggested.


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