The Planted Tank Forum - Search Results
Planted Tank Forums
Your Tanks Image Hosting *Tank Tracker * Plant Profiles Fish Profiles Planted Tank Guide Photo Gallery Articles

Go Back   The Planted Tank Forum > Search Forums

Showing results 1 to 25 of 250
Search took 0.05 seconds.
Search: Keyword(s): ; Posts Made By: jeffkrol
Forum: Lighting Today, 05:00 AM
Replies: 13
Views: 465
Posted By jeffkrol
"I'm" not saying that.. Production of red...

"I'm" not saying that.. Production of red pigments in plants are caused by a number of factors..
That said, If the pigments are already present you will "see" them better w/ more reflected red...
Forum: Lighting Today, 03:40 AM
Replies: 1
Views: 63
Posted By jeffkrol
No......... 20% watt difference and 9% lumen...

No.........

20% watt difference and 9% lumen efficiency difference..

Roughly, given equal reflector efficiency (size of bulb has little to do w/ this) 1 t5 is 30% more light than a T8 length...
Forum: Lighting Today, 02:50 AM
Replies: 2
Views: 94
Posted By jeffkrol
Well, generally speaking there about 1/2 the...

Well, generally speaking there about 1/2 the lumen efficiency of a good branded emitter. Also it is likely that K values and operating characteristics aren't consistent.. That said, they are at...
Forum: Lighting Yesterday, 05:56 PM
Replies: 20
Views: 835
Posted By jeffkrol
A cheaper otion is a DSunY in a single panel .. ...

A cheaper otion is a DSunY in a single panel ..
Amazon.com : DSuny Programmable Intelligent LED Aquarium Lights Led Reef Lights for Fish Tank Coral Reef, Automatically Simulate...
Forum: Lighting Yesterday, 01:42 PM
Replies: 20
Views: 835
Posted By jeffkrol
I'd consider them fairly equal.. but if...

I'd consider them fairly equal.. but if ramp/timer is important it certainly pushes the choice to the exotic..

One very brief observation using the web and consistent w/ 1 row LED fixtures:
Very...
Forum: DIY Yesterday, 04:00 AM
Replies: 11
Views: 285
Posted By jeffkrol
First let me start by saying beautiful work... ...

First let me start by saying beautiful work...

That said, a bit of a minor question, Why did you stick w/ the 120 degree angle?.. As a minor point.. doing say 90 degree may have helped concentrate...
Forum: Lighting 11-26-2014, 10:52 PM
Replies: 5
Views: 229
Posted By jeffkrol
Just a start: 1)Cyan range output is low from...

Just a start:
1)Cyan range output is low from almost all white LEDs.. and it hits one of the supplemental photosynthetic pigments (carotinoids). Cyan is also missing from a visual perspective,...
Forum: Lighting 11-26-2014, 10:20 PM
Replies: 2
Views: 122
Posted By jeffkrol
Why mess around w/ multiple fixture??? ...

Why mess around w/ multiple fixture???
https://www.reefbreeders.com/shop/photon-24/

Does what you want and more than enough light.. Granted a bit higher priced..
They have a freshwater patten...
Forum: Lighting 11-26-2014, 09:04 PM
Replies: 9
Views: 206
Posted By jeffkrol
not PAR wise.. I suggested it based on dimensions...

not PAR wise.. I suggested it based on dimensions alone..and as a supplement light..



And:
http://www.aquaticplantcentral.com/forumapc/attachment.php?attachmentid=19869&d=1386296272

...
Forum: Lighting 11-26-2014, 06:23 PM
Replies: 9
Views: 206
Posted By jeffkrol
that does look cool though............ ;) ...

that does look cool though............ ;)
...
Forum: Lighting 11-26-2014, 05:24 PM
Replies: 9
Views: 206
Posted By jeffkrol
Last I saw (needs verification) is the stingray...

Last I saw (needs verification) is the stingray is .8" thick.. w/ end brackets removed



On a carpentry note:
You could route a light groove into the top.. Probably no more than 1/4 inch deep...
Forum: Lighting 11-26-2014, 04:45 PM
Replies: 9
Views: 206
Posted By jeffkrol
For starters isn't your tank 36" wide??? And you...

For starters isn't your tank 36" wide??? And you are using a 24" strip???

That aside.. adding A Finnex stingray may be an option:
http://www.finnex.net/index.php/stingray/?___store=default
Forum: Lighting 11-26-2014, 04:33 PM
Replies: 14
Views: 408
Posted By jeffkrol
LOL, I've thought of things like yellow...

LOL, I've thought of things like yellow highlighter ect. as well.. ONLY problem
is all you are doing is subtracting spectrum..

adding 3500k adds red.....
Forum: Lighting 11-26-2014, 03:09 PM
Replies: 14
Views: 408
Posted By jeffkrol
AFAICT yes... Just need to watch amp/watt...

AFAICT yes... Just need to watch amp/watt parameters..and make sure it is a variable voltage type (12-24V)
Also for further reference "if" you like to tinker and "if" you find it too blue.. or...
Forum: Lighting 11-26-2014, 01:02 PM
Replies: 35
Views: 1,332
Posted By jeffkrol
Well for a start.. from the owner.. ...

Well for a start.. from the owner..



so it is either the 3 row or 5 row..
Guesstimating it is 3 row.. and comparing to a 5 row @ 10" PAR would be around 70 (1.56x lumens)

dividing the 3W ...
Forum: Lighting 11-26-2014, 01:43 AM
Replies: 7
Views: 219
Posted By jeffkrol
IF you kept the 2 you have, you would have to add...

IF you kept the 2 you have, you would have to add one or 2 more..
Or throw something like this in the mix..
http://www.aquatraders.com/LED-Aquarium-Lighting-Beamswork-Freshwater-Plant-p/56426p.htm
Forum: Lighting 11-25-2014, 11:46 PM
Replies: 8
Views: 292
Posted By jeffkrol
thats cool. i wonder if i can put that in a...

thats cool. i wonder if i can put that in a waterproof tube and sink it[/QUOTE]
Marineland makes some.. ;)
http://www.petco.com/product/118304/Marineland-Hidden-LED-Lighting-System.aspx

And I...
Forum: Lighting 11-25-2014, 11:20 PM
Replies: 8
Views: 292
Posted By jeffkrol
Adding this "should" work (again not ure how ...

Adding this "should" work (again not ure how "potent" the LEd's have to beto overcome the t5's) and gives you the option to tone your tank color..
not the cheapest..on some places you will get 5M...
Forum: Lighting 11-25-2014, 10:39 PM
Replies: 5
Views: 229
Posted By jeffkrol
48W of LED's over 14gal.. Plan on dimming.. ...

48W of LED's over 14gal.. Plan on dimming..

as a thought exercise consider this:
2 or 3 of these where you have the blue in diag 2 (cyan,rb,deep red), no optics..
Outer 2 rows all white..
Each...
Forum: Lighting 11-25-2014, 09:43 PM
Replies: 35
Views: 1,332
Posted By jeffkrol
some here have added programmable dimmers to...

some here have added programmable dimmers to these lights.. AFAICT they run constant current and can easily be controlled using things like this:...
Forum: Lighting 11-25-2014, 03:13 PM
Replies: 8
Views: 292
Posted By jeffkrol
Just to add a bit of perspective based on some...

Just to add a bit of perspective based on some assumed efficiencies..:
To equal your t5 in light output you would need 100W plus of LED's..
Something like this (timer ready) would be fairly...
Forum: Lighting 11-24-2014, 06:08 AM
Replies: 35
Views: 1,332
Posted By jeffkrol
this one: ...

this one:
https://lh3.googleusercontent.com/-zOYxM19cuiA/UhUxSdH3ZxI/AAAAAAAAH5g/rx7Y7JZ93xQ/w985-h554-no/IMG_2955.JPG

Hui Lumen double bright uses .5W led's
He also measured the 1W and 3W...
Forum: Lighting 11-24-2014, 05:12 AM
Replies: 13
Views: 465
Posted By jeffkrol
Really, that is ALL I had to...

Really, that is ALL I had to say...........:eek::icon_bigg:icon_bigg:icon_bigg:icon_bigg
Forum: Lighting 11-24-2014, 04:55 AM
Replies: 35
Views: 1,332
Posted By jeffkrol
Gee looks like we have a new one to ...

Gee looks like we have a new one to debate.........
http://www.aquatraders.com/LED-Aquarium-Lighting-EVO-Quad-Freshwater-Plant-p/56576p.htm

Now we got your 4 rows in a 3W version...
Forum: Lighting 11-24-2014, 04:37 AM
Replies: 346
Views: 140,233
Posted By jeffkrol
I agreed w/ you that inch for inch the PC had a...

I agreed w/ you that inch for inch the PC had a higher power density. I disagree that w for w it is more efficient.. Numbers prove that..
On a side note.. you can (both real world and theoretically)...
Showing results 1 to 25 of 250

 
Forum Jump

All times are GMT. The time now is 09:00 AM.


Powered by vBulletin®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright Planted Tank LLC 2012