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 08-21-2004, 03:04 PM   #1
Aquarium Advice Apprentice
 
Join Date: Jul 2004
Location: Santa Cruz, CA
Posts: 33
nanometers

what is the difference between 420 nano and 470 nano?
__________________

__________________
wishing great tanks for all, chris

72 gal bow front. cpr dual bak pak skimmer, 20 gal sump, approx 85lbs LR, 260watt power compact, two moonlight leds, (2)65w actinic, (2)65w 10k, 2 fire shrimp, 47 hermit crabs, 80 snails, peppermint shrimp, yellow tang, flame angel, 2 Oce clownfish, lawnmower blenny, coral beauty angel, lyretail anthias, 3 feather dusters, magnificent anemone, candy coral, yellow cucumber, 2 pulsing xenia, torch coral, mushrooms, condy anemone
SALTY72 is offline   Reply With Quote
Old 08-21-2004, 07:47 PM   #2
AA Team Emeritus
 
reefrunner69's Avatar
 
Join Date: May 2002
Location: Cedar Key, FL
Posts: 1,663
50 nanometers
__________________

__________________
Kevin

Visit Nature Coast Photography
reefrunner69 is offline   Reply With Quote
Old 08-21-2004, 07:50 PM   #3
AA Team Emeritus
 
reefrunner69's Avatar
 
Join Date: May 2002
Location: Cedar Key, FL
Posts: 1,663
If I get my directions right, LOL, 420 nm is going to be more blue and 470 will be more violet. 470 is 50nm more into the UV spectrum.
__________________
Kevin

Visit Nature Coast Photography
reefrunner69 is offline   Reply With Quote
Old 08-21-2004, 08:13 PM   #4
Aquarium Advice Addict
 
Atari's Avatar
 
Join Date: May 2004
Location: UK
Posts: 2,468
Isn't 420 nm Actinic and 470 nm is Moonlight?
__________________
My wife and I were happy for twenty years. Then we met.
- Rodney Dangerfield.


Click HERE to vote for Aquarium Advice!
Atari is offline   Reply With Quote
Old 08-21-2004, 08:26 PM   #5
AA Team Emeritus
 
reefrunner69's Avatar
 
Join Date: May 2002
Location: Cedar Key, FL
Posts: 1,663
IT ain't that simple, and I am not qualified to explain it, but to give you an idea, Actinic is not 420nm, most actinic peaks at 420nm.
__________________
Kevin

Visit Nature Coast Photography
reefrunner69 is offline   Reply With Quote
Old 08-21-2004, 08:33 PM   #6
Aquarium Advice Apprentice
 
Join Date: Jul 2004
Location: Santa Cruz, CA
Posts: 33
so my question came up because coralife offers actinic 420nm and royal blue 470nm so this is why i asked? what is the difference and which is better suited for my reef tank? specs of tank below
__________________
wishing great tanks for all, chris

72 gal bow front. cpr dual bak pak skimmer, 20 gal sump, approx 85lbs LR, 260watt power compact, two moonlight leds, (2)65w actinic, (2)65w 10k, 2 fire shrimp, 47 hermit crabs, 80 snails, peppermint shrimp, yellow tang, flame angel, 2 Oce clownfish, lawnmower blenny, coral beauty angel, lyretail anthias, 3 feather dusters, magnificent anemone, candy coral, yellow cucumber, 2 pulsing xenia, torch coral, mushrooms, condy anemone
SALTY72 is offline   Reply With Quote
Old 08-21-2004, 08:41 PM   #7
AA Team Emeritus
 
reefrunner69's Avatar
 
Join Date: May 2002
Location: Cedar Key, FL
Posts: 1,663
IMO, you want a bulb that peaks at 420nm.
__________________
Kevin

Visit Nature Coast Photography
reefrunner69 is offline   Reply With Quote
Old 08-21-2004, 08:54 PM   #8
Aquarium Advice FINatic
 
Join Date: Jun 2004
Location: Toano, Virginia!
Posts: 716
470 is going to be more blue than 420. At 400 nM, the spectrum would be percieved as violet; not to be confused with UV. the higher you go in the spectrum, the percieved color changes from violet to blue, then on to green, yellow, orange and then red at around 700 nM. Once you move beyond 700 nM you move into the infra-red spectrum. The ultra-violet spectrum is at a shorter wave-length below 400 nM. The main difference between 420 nM and 470 nM would be the percieved color....470 being more blue.

How that affects the aquarium is more difficult to explain and I dont think I can. In short, everything needs energy to survive. We use certain forms of energy to create other forms energy to sustain life. Plants need light energy for photosynthesis where they create more forms of energy that they need to sustain life. Light is composed of photons and photons of one color only differ from photons of another color by the amount of potential energy they contain. Certain colors have the potential to produce more energy than other colors. Probably why aquarists have chosen the specific colors they have. Now which color is best suited for which type of life I cant say; Im sure there is a scientist somewhere who knows or maybe even someone on the site who is smarter than I.
__________________
I almost dated a psychic.....


She left me before we met.
youronlysin is offline   Reply With Quote
Old 08-21-2004, 09:11 PM   #9
Aquarium Advice FINatic
 
Join Date: Jun 2004
Location: Toano, Virginia!
Posts: 716
420nM lamps would produce a light that would be most efficient to promote photosynthesis.
__________________
I almost dated a psychic.....


She left me before we met.
youronlysin is offline   Reply With Quote
Old 08-21-2004, 09:29 PM   #10
Aquarium Advice Apprentice
 
Join Date: Jul 2004
Location: Santa Cruz, CA
Posts: 33
wow, that was a lot of info thanks a bunch.
__________________

__________________
wishing great tanks for all, chris

72 gal bow front. cpr dual bak pak skimmer, 20 gal sump, approx 85lbs LR, 260watt power compact, two moonlight leds, (2)65w actinic, (2)65w 10k, 2 fire shrimp, 47 hermit crabs, 80 snails, peppermint shrimp, yellow tang, flame angel, 2 Oce clownfish, lawnmower blenny, coral beauty angel, lyretail anthias, 3 feather dusters, magnificent anemone, candy coral, yellow cucumber, 2 pulsing xenia, torch coral, mushrooms, condy anemone
SALTY72 is offline   Reply With Quote
Reply

Tags
meters, nano

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








» Photo Contest Winners








Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 03:50 AM.


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