Go Back   Aquarium Advice - Aquarium Forum Community > Saltwater and Reef > Saltwater & Reef - Getting Started
Click Here to Login

Join Aquarium Advice Today
Reply
 
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
 
Old 08-12-2003, 08:51 PM   #1
Aquarium Advice FINatic
 
Join Date: Jan 2003
Location: Tustin, CA
Posts: 865
reflector/lighting question

Does anyone or has anyone had any experience w/ the different types of reflectors for lighting?
The reason I ask is because AH Supply (http://www.ahsupply.com/36-55w.htm) has a reflector with their Bright kits that they say has better coverage (something like 162%) as oppsed to standard reflectors (99-100% coverage). I'm comparing two of the 36" 2x55W kits w/ reflectors to Hello Lights kit that has one reflector (http://www.hellolights.com/36retrokits.html). Would the reflector make that much of a difference?

Any thoughts & opinions are welcome.

John
__________________

Salt4Us is offline   Reply With Quote
Old 08-13-2003, 01:23 PM   #2
Aquarium Advice FINatic
 
Join Date: Jan 2003
Location: Tustin, CA
Posts: 865
bump
__________________

Salt4Us is offline   Reply With Quote
Old 08-13-2003, 03:02 PM   #3
Aquarium Advice Addict
 
Join Date: Feb 2003
Location: wis
Posts: 1,433
Send a message via MSN to alrmc4
with t5's the individual reflectors make all the difference with out them do not bother do not know if it is the same in this case... just figured someone would chime in and correct me now if i am wrong
__________________
-------------------------------
lor
like pictures? visit
http://www.shutterbugs-gallery.com/forum/portal.php
alrmc4 is offline   Reply With Quote
Old 08-13-2003, 03:30 PM   #4
Aquarium Advice Addict
 
Join Date: Jun 2003
Location: Earth
Posts: 1,227
home depot - $6 for 20 feet of polished aluminum flashing

paint it flat white

is it as efficent as these fancy specular reflectors? No

I'd venture to guess it's around 75% efficient ... but it's a LOT less expensive

I don't agree with AH supplies math ... how can you get more than 100% out of a system? that would require free energy... maybe they've cracked Nikola Tesla's ideas on harnessing 'free energy'.
__________________
justDIY is offline   Reply With Quote
Old 08-13-2003, 03:38 PM   #5
Guest
 
Posts: n/a
The reflectors that AH Supply are somewhat similar to the Spider Light Reflectors..The amount of refraction or curviture you get from a reflector, is designed to increase the amount of light produced to the subject in question... Does it make a difference? Well, to the naked eye? not really, to a light meter? yes. This is what they base their tests on... The reflectors that AH supply can produce 162% efficiency. This does not quite mean that you will get 162% more light by using their reflector, it simply means that you will use every drop of light produced as opposed to the flashing method which just as Gordon said, may be around 75% efficient..Am I making sense here?
__________________
  Reply With Quote
Old 08-13-2003, 04:37 PM   #6
AA Team Emeritus
 
BillyZ's Avatar
 
Join Date: Apr 2003
Location: Western NY
Posts: 4,064
so, i've always wondered then, why don't people just attach mirrors as reflectors? I can't imagine a more efficient reflector than a mirror. Any colored surface, even white, will absorb some amount of the light.
__________________
Acronyms and Abbreviations
BillyZ is offline   Reply With Quote
Old 08-13-2003, 05:03 PM   #7
Guest
 
Posts: n/a
Quote:
why don't people just attach mirrors as reflectors?
Some do. They glue it to the underside of the canopy and line the walls of it... This can work great however, it is hard to bend and hard to drill through, and plastic gets discoloration badly due to heat...so, most of us depend on manfacturers of reflectors to do this for us... Unless you get teh DIY bug and do it with mirrors or aluminum flashing...
__________________
  Reply With Quote
Old 08-13-2003, 05:15 PM   #8
Aquarium Advice Freak
 
Join Date: Jul 2003
Location: Coral Springs, FL
Posts: 217
Send a message via MSN to astride13
The reflector can actually make a big difference. A fluorescent bulb provides 360 degrees of light. If you could reflect 100% of the other 180 degrees, you would have 200% on the other side. Unfortunatly, even with a mirror you can never get all of the other side to reflect down. You would always get some loss on the reflection. If they claim 162% then they are pushing 62% of the unused light down. Since they are probably doing more than 180 degrees on the top, they are losing more than 50% of left over light. This is similar to a spot light, the reflector focuses the all light into one spot small spot.

The hard part is to actually prove that their reflector is actually better. I guess there are tools to measure, but I think buying extra lighting would be cheaper.
__________________
Adrian
astride13 is offline   Reply With Quote
Old 08-14-2003, 12:13 AM   #9
Aquarium Advice FINatic
 
Join Date: Jan 2003
Location: Tustin, CA
Posts: 865
OK....the general opinion here is that a reflector will make a difference. Aluminum, mirror or otherwise is better than no reflector at all. Thanks for the opinions!

Does anyone have any experience w/ Hamilton lighting? There's a factory outlet about 30 to 40 mins away from us & we were thinking about getting their 2x96w PC reto set up.

Thanks again!

John
Salt4Us is offline   Reply With Quote
Old 08-15-2003, 03:27 PM   #10
Aquarium Advice FINatic
 
Join Date: Jun 2003
Location: Mankato MN
Posts: 863
Send a message via MSN to gooyferret Send a message via Yahoo to gooyferret
reflectors are the most important part of lighting, besides ballast rating and bulb type. to run flouresents it is best to run individual reflectors for each bulb that way each bulb is getting its light reflected more efficently. Check out my thread on the sticky Lighting comparisons I give alot of explanations and info on there. AH supply's info on that page is misleading and irrelevant. Their kits are PC's not T5HO. PC's will never have the better reflectivity that a T5HO will have because of the dual tubes of PC's. Also if you look at the reflector and tubes of their example pics you will see and can tell that the info is false. Most of the lighting that will ascend upward will be lost with a dual tube light. The reflector in which they have is designed for a flouresent bulb not a dual PC. IF they can give me a photometric report ill believe there fantasy. Sorry for the gripe JMHO
__________________

__________________
" 'TAP TAP TAP'...Here fishy fishy fishy"
gooyferret is offline   Reply With Quote
Reply

Tags
light, lighting

Please support our sponsors and let them know you heard about them on AquariumAdvice.com

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
T5HO bulb and reflector question? InfernoST General Hardware/Equipment Discussion 3 07-15-2009 07:35 PM
MH reflector jherrin215 DIY Projects 8 06-28-2008 11:20 PM
reflector mandown123 General Hardware/Equipment Discussion 8 03-21-2008 10:07 AM
MH reflector got bait? General Hardware/Equipment Discussion 3 12-23-2003 05:23 PM
Lighting reflector snookface Saltwater Reef Aquaria 1 11-10-2003 03:48 PM







» Photo Contest Winners








Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 08:32 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.