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Unread 06/03/2005, 10:00 AM   #251
WaterKeeper
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Holy Smokes, did I ramble on that much all by myself? It is 43 printed pages and it doesn't , I guess, include my worthless posts. Yikes!

Thanks Thrill.


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Unread 06/03/2005, 11:18 AM   #252
lldewe
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Awesome!

Great work!! Thanks so much!

Oh, and thanks to Waterkeeper too for all the excellent info. It is now being saved for posterity in my handy dandy notebook!!

Cheers,
Lorie


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Unread 06/03/2005, 11:23 AM   #253
thrlride
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Just doing my civic duty for the day.

I thought about leaving all of MY posts since they are usually so helpful.

I also removed all smilies as no one wants to see little red x's and I didn't feel like uploading all the different smilies.


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Unread 06/03/2005, 11:24 AM   #254
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Post editing of your posts took out quite a few pages as well.


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Unread 06/03/2005, 11:25 AM   #255
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But like you said, some of your posts was triggered by questions so following that page can be somewhat difficult.


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Unread 06/03/2005, 11:26 AM   #256
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Top 50 poster! I'm such a PW.


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Unread 06/03/2005, 11:31 AM   #257
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Quote:
Originally posted by thrlride
You guys better freakin' appreciate this!!!!!

The worthwhile posts from waterkeeper....

http://www.freewebs.com/thrlride/lightingthread.htm
Why thank you. Duely appreciated.


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Unread 06/03/2005, 12:01 PM   #258
thrlride
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No problem, I live to serve.


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Unread 06/03/2005, 01:53 PM   #259
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Quote:
Originally posted by thrlride
No problem, I live to serve.

As a Prez should




Official Vice Grand Pooh-Bah of the Thlride for Prez. thread


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Unread 08/17/2005, 01:17 AM   #260
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I don't know how much has been answered about the automotive lamps, but I (Jay) work for the company that does lighting for GM. I have a good bit of first hand experience w/ the HID bulbs used in the Cadillac XLR sports car. They are Xenon charged tubes, that use a very complex Micro-controlled ballast, that fires the tube at ~1,200 volts. I believe (But can't recall if they are marked or not) they are 8,000K bulbs. don't know what else you were wondering about, but ask and ye shall recieve.


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Unread 08/17/2005, 07:56 AM   #261
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Nice job on the edit Ryan, that should help someone out a lot that dont need to see all our PW comments Now back to the cage, you've been out too long


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Unread 08/17/2005, 09:29 AM   #262
thrlride
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Wow, this feels like it has been gone for a while!

Thanks scuba.

Back to the cage I go!


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Unread 08/18/2005, 09:04 AM   #263
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Asked about the headlights so long ago I forgot what I asked.

I think what I was talking about was restrike time. With a true metal halide you can't switch the lights off and then right back on again. The interior of the arc tube becomes highly conductive once the lamp has been on for awhile and heated. Hitting it with a 1200 volt start-up jolt would make the MH more like a flash bulb than a true lamp. It sure would burn very bright indeed for a second but that would be the end of it. There is a 15-20 minute delay time between turning the lamps off and back on to let things cool down and prevent that from occurring.

Not so with the car headlamps. As you have said, they appear to use a special electronic ballast that matches the conductivity inside the arc tube to the amount of starting voltage applied. The enables them to be restarted right away. I also imagine it is why they don't start up dim and get brighter over time. The ballast probably cranks up the juice at first and then trims it down as the lamp warms, matching current applied to internal resistance. If they are doing it with car headlamps I am sure the MH ballast makers will follow suit in the near future.

Thanks for the info Jay.

Now all I need is to get Ryan to make a condensed version of what I just said.


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Unread 08/18/2005, 03:19 PM   #264
thrlride
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How about this:

Due to the increased conductivity within current metal halides after being on for a period of time you cannot switch them off and on again. I, Waterkeeper, master of most that is reefs, presume that in the near future ballast manufacturers will copy automotive HID ballasts and allow this to happen.

Automotive ballasts are able to turn the headlights on and off repeatedly without any delay and the lights come on immediately without having to brighten as they warm up. I presume they do this by measuring the conductivity within the bulb and alter the voltage supplied to match the internal resistance.

Does this mean that we could have the technology to dim on and dim off our metal halides to closely mimic the sunset/sunrise? Or how about dimming our lights for the seasons? We have moon phase controllers now, imagine the possibilities with a season controller!


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Unread 08/18/2005, 03:22 PM   #265
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ummm, so did we ever come to a consensus on what produces the most bang for the buck? T5, HQI......


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Unread 08/18/2005, 05:02 PM   #266
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Oh yeah!!?? So's your old man, you a dirty son of a ballast! Your filament is limp and you couldn't fluoresce a lumen in heat. I bet even your lux is actinic. Go vaporize yourself!

Newbies United Against Knowledge in Reefkeeping.

(Thanks, Waterkeeper.)


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Unread 08/19/2005, 07:42 AM   #267
thrlride
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Quote:
Originally posted by Colescuttle
Your filament is limp and you couldn't fluoresce a lumen...
(Thanks, Waterkeeper.)



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Unread 08/19/2005, 09:56 AM   #268
WaterKeeper
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Quote:
Originally posted by thrlride
Does this mean that we could have the technology to dim on and dim off our metal halides to closely mimic the sunset/sunrise? Or how about dimming our lights for the seasons? We have moon phase controllers now, imagine the possibilities with a season controller!
The problem with dimmable MH lamps is in the way they create light. They create a hot plasma of metal halide ions that emit photons. If one cools that plasma to any degree the amount of light drops dramatically, not in slow stages. Also, deposition of materials on the arc tube increases. This creates a problem with most MH lamps. However, as you might guess, people are working on the problem as you can see HERE.

One little point here is that the bulk of the critters that we maintain are pretty much centered around the equator with very little seasonal variations and only small changes in photoperiod in the course of a year.

Oh and Colescuttle,

May a micromol of photons flux down upon your head.




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"Leading the information hungry reefer down the road to starvation"

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Unread 08/19/2005, 10:07 AM   #269
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He said "Flux", I'm telling.....


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Unread 08/19/2005, 10:08 AM   #270
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just wanted to say
KUDOS TO YOU..!!!! GREAT THREAD


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Unread 08/19/2005, 10:16 AM   #271
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Quote:
Originally posted by The Grim Reefer
He said "Flux", I'm telling.....



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Unread 10/22/2005, 09:20 AM   #272
BrianPlankis
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WaterKeeper,

Is this old news, or is this really a new breakthrough for LEDs?
It would be cool to have LED lights over the tank someday.

http://news.yahoo.com/s/space/200510...ndoflightbulbs


Brian


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Unread 10/22/2005, 11:36 AM   #273
WaterKeeper
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Not old news but I'm not sure about the claim that they emit twice the light of a 60 watt bulb. Does that mean that if you have 60watts worth of LED's they would shine twice as bright as a 60 watt incandescent? It takes a ton of LED's right now to add up to a 60 watts of current draw, so the cost would still be prohibitive. I think the main advantage they are pointing out is that the LED produces a true white light. Up to now you had to combine red, green and blue LED's to get white light.

Of course, for aquarium use we would need to know the spectral output of the white source. The good point is that it is fairly easy to supplement the spectral output using other colors of LED's. Anyway, I'll look at the article in the Journal of the ACS and see what the big news is. I wouldn't go trading in those MH or T-5 quite yet. You'll notice that the DOE is talking about LED lights saving energy in 2025.


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Unread 10/22/2005, 12:03 PM   #274
BrianPlankis
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Quote:
Originally posted by WaterKeeper
I wouldn't go trading in those MH or T-5 quite yet. You'll notice that the DOE is talking about LED lights saving energy in 2025.
I guess I'll remove my post from the buy/sell forum then for my MH. I guess yahoo was sensat...sensait....exaggerating their headline a little? Who knew they did that

Brian


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Unread 10/22/2005, 08:35 PM   #275
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watts

WaterKeeper,

I am setting up a 37 gal cube. I eventually would like a nice mixed reef tank. Including a clam. Should I go with a 250 MH or a 150 MH. I really enjoyed reading your post. The depth of this tank is 21.5". Thanks for your help.


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