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Search: Keyword(s): ; Posts Made By: jeffkrol
Forum: Lighting Today, 05:02 PM
Replies: 111
Views: 1,822
Posted By jeffkrol
LOL.. What... I can't write my off my "R&D" in my...

LOL.. What... I can't write my off my "R&D" in my taxes.. ;)

some people can do it in one shot.. others.. not so much...

more words of wisdom from the internet:
Forum: Lighting Today, 04:31 PM
Replies: 1
Views: 61
Posted By jeffkrol
AFAICT. that is medium-ish. how's that for...

AFAICT. that is medium-ish. how's that for waffling.. ;)
That light is, I believe 1 3W LED...
Forum: Lighting Today, 04:28 PM
Replies: 5
Views: 61
Posted By jeffkrol
AFAICT that would be perfect.. ;)

AFAICT that would be perfect.. ;)
Forum: Lighting Today, 04:18 PM
Replies: 5
Views: 61
Posted By jeffkrol
There are arguably better spectrum's.. ...

There are arguably better spectrum's..
http://www.fishfurfeather.com/hagen-m-13.html
http://www.fishfurfeather.com/images/hagen/lifeglodiag.jpg

Companion bulb (aquaglow):...
Forum: Lighting Today, 02:11 PM
Replies: 111
Views: 1,822
Posted By jeffkrol
Saving is an elusive term.. Look at it this...

Saving is an elusive term..
Look at it this way.. for an "automated build".....
PS=$20-$50
Controller= $20-$60(much higher for much fancier i.e Apex)
Drivers(if not using constant voltage...
Forum: Lighting Today, 10:09 AM
Replies: 1
Views: 113
Posted By jeffkrol
The RAy II is listed @ 50 PAR at 24".. ...

The RAy II is listed @ 50 PAR at 24"..
http://www.plantedtank.net/forums/showthread.php?t=189944

Many add a secondary light to somewhat compensate for a perceived spectrum "quality" deficiency.....
Forum: Lighting Today, 09:56 AM
Replies: 3
Views: 94
Posted By jeffkrol
It is very roughly 2x the amount of light you...

It is very roughly 2x the amount of light you have now....
Forum: Lighting Yesterday, 09:18 PM
Replies: 111
Views: 1,822
Posted By jeffkrol
It's a puzzle.. I throw pieces.. you put it...

It's a puzzle.. I throw pieces.. you put it together for your satisfaction.. Besides you got to believe somebody.. ;)

For "fun" read through the "revisions"......
Forum: Lighting Yesterday, 08:53 PM
Replies: 111
Views: 1,822
Posted By jeffkrol
This has nothing to do w/ reefers and their...

This has nothing to do w/ reefers and their Windex tanks.. ;)

for fun..




reefcentral...ect. ect...
Forum: Lighting Yesterday, 08:37 PM
Replies: 111
Views: 1,822
Posted By jeffkrol
a qualitative measurement and has nothing to do...

a qualitative measurement and has nothing to do w/ "PAR efficiency"... nor even half of what we are talking about.

ON a "strictly personal note" "I" find more uses for Red than violet...YMMV
...
Forum: Lighting Yesterday, 08:29 PM
Replies: 111
Views: 1,822
Posted By jeffkrol
http://www.controlledenvironments.org/Light1994Con...

http://www.controlledenvironments.org/Light1994Conf/1_1_Geiger/Fig%20Gei%202.jpg

Now if you can find me "moles of photons/watt of violet and red.. I'd appreciate it .. we could be more exact..
No...
Forum: Lighting Yesterday, 07:49 PM
Replies: 111
Views: 1,822
Posted By jeffkrol
but your mixing things up.. FIRST you would have...

but your mixing things up.. FIRST you would have to produce the same "moles" of electrons.. subtract depth losses and then "correct" for photon efficiency ala McCree..

You can't just throw any...
Forum: Lighting Yesterday, 07:06 PM
Replies: 111
Views: 1,822
Posted By jeffkrol
I never said purple wasn't "needed" anymore than...

I never said purple wasn't "needed" anymore than 660nm red.. ;)
When I get a 3ft deep tank I'll worry about penetration of "red"...
...
Forum: Lighting Yesterday, 06:00 PM
Replies: 2
Views: 101
Posted By jeffkrol
DIY is currently just a matter of "modules" and...

DIY is currently just a matter of "modules" and some basic math for the simplist builds.. And time and money ..

Current "commercial" fw aquarium lighting is approaching the break even point w/...
Forum: Lighting Yesterday, 05:54 PM
Replies: 4
Views: 114
Posted By jeffkrol
The lights will grow plants fine.. The look???

The lights will grow plants fine.. The look???
Forum: Lighting Yesterday, 05:09 PM
Replies: 7
Views: 184
Posted By jeffkrol
LOL.. theory is fish can't see red... ;)...

LOL..
theory is fish can't see red... ;) sooo............... ;)
Forum: Tank Journals Yesterday, 04:54 PM
Replies: 17
Views: 954
Posted By jeffkrol
Good I've had numerous builds where I had a minor...

Good I've had numerous builds where I had a minor bridge from the plus or minus pad to the heatsink..
My DVM lights a single LED(dully) on ohms.. it is a spiffy and fast test..

Though...
Forum: Lighting Yesterday, 01:57 PM
Replies: 111
Views: 1,822
Posted By jeffkrol
as w/ most things ..taken in moderation and I'm...

as w/ most things ..taken in moderation and I'm sure the output is quite low....but:


but your right.."most" UV are violet.. not technically UV...
As to efficieny.. depends on the chart.. Looks...
Forum: Equipment Yesterday, 09:32 AM
Replies: 4
Views: 206
Posted By jeffkrol
There are foam floats for pots in tanks.. ...

There are foam floats for pots in tanks..
Trellis rafts but don't think that is what you had in mind:
http://www.aquaticplantenthusiasts.com/ripariums/3117-cryptic-diptych-riparium.html
Hanging...
Forum: Tank Journals Yesterday, 08:45 AM
Replies: 17
Views: 954
Posted By jeffkrol
Hmmm.. Interesting.. but I've found that you can...

Hmmm.. Interesting.. but I've found that you can get some trickle current due to leakage from the solder joint to the "star"..... Did you test from diode pad to heatsink on each LED and on each side...
Forum: Lighting Yesterday, 04:20 AM
Replies: 111
Views: 1,822
Posted By jeffkrol
AFAICT it is a 4 channel design... Not much...

AFAICT it is a 4 channel design... Not much different than those 5050smd strips.. only w/ a white "channel" added..



http://www.qualiteitems.com/ebay/sat.jpg
Forum: Lighting Yesterday, 02:58 AM
Replies: 111
Views: 1,822
Posted By jeffkrol
That was Hoppy ...

That was
Hoppy
http://www.plantedtank.net/forums/showthread.php?t=545113&highlight=
Just use the beamswork as a heatsink..

, JasterMake and Randpost.
Forum: Lighting 07-08-2014, 11:04 PM
Replies: 111
Views: 1,822
Posted By jeffkrol
Like this better.. ;) 7=6500k/7=3500k (dimmed...

Like this better.. ;) 7=6500k/7=3500k (dimmed together)/660nm red ( global dimmed @90%..) blue/wh channel off cyan channel off

http://www.qualiteitems.com/ebay/reddish.jpg

Daylight all channels...
Forum: Lighting 07-08-2014, 10:38 PM
Replies: 111
Views: 1,822
Posted By jeffkrol
ADDING a RED diode.. say it ain't...

ADDING a RED diode.. say it ain't so............... ;)
Forum: Lighting 07-08-2014, 10:30 PM
Replies: 111
Views: 1,822
Posted By jeffkrol
you can't accurately measure PAR in the red...

you can't accurately measure PAR in the red spectrum.. nor really most LED's

http://www.apogeeinstruments.com/aquarium-par-meters/
Since I don't have a spectroradiometer.. why bother... ???...
Showing results 1 to 25 of 250

 
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