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Search: Keyword(s): ; Posts Made By: jeffkrol
Forum: DIY Today, 01:21 AM
Replies: 4
Views: 132
Posted By jeffkrol
Yes you should have plenty of light. As to...

Yes you should have plenty of light.

As to "purple" well they are high PAR
, low lumen and good ones are a bit expensive and they are prone to failure.

As such, I don't really think they...
Forum: DIY Today, 01:05 AM
Replies: 51
Views: 1,432
Posted By jeffkrol
Actually the same thing applies to the PWM wire.....

Actually the same thing applies to the PWM wire.. Your meter is "averaging"..

http://www.ultimatereef.net/uploader/2013Q4/arduino-50-quick.png
Forum: DIY Yesterday, 10:04 PM
Replies: 4
Views: 132
Posted By jeffkrol
quick notes.. Coralux boards have pull down...

quick notes..
Coralux boards have pull down resistors so nothing will light till you attach the (yes compatible) PWM wire.
it is a safety feature in the event the Aduino fails. The lights won't go...
Forum: DIY Yesterday, 09:48 PM
Replies: 51
Views: 1,432
Posted By jeffkrol
Possibly, but doesn't hurt to err on the side of...

Possibly, but doesn't hurt to err on the side of caution.

either way it is a minor issue but occurs soo often I feel obligated to point out the actual "mechanics".. Just "me".. ;)

Besides if...
Forum: DIY Yesterday, 08:03 PM
Replies: 51
Views: 1,432
Posted By jeffkrol
just have to say this.. It is not .4V... It is...

just have to say this.. It is not .4V... It is whatever voltage the Vero takes at the LDD mA output.. BUT just pulsed to "on" at 20% of the time..

20% of the time it is 29V 80% of the time it is ...
Forum: Lighting 07-30-2015, 02:01 PM
Replies: 11
Views: 1,482
Posted By jeffkrol
I stretched a bit but your right AFAICT RayII's...

I stretched a bit but your right AFAICT RayII's (some) and the little clip on Planted plusses w just red and white..No idea about the current 3 color ones..

I was still a-learning at that...
Forum: Lighting 07-30-2015, 05:01 AM
Replies: 11
Views: 1,482
Posted By jeffkrol
Th topic has evolved over time. Finnex has also...

Th topic has evolved over time. Finnex has also abandoned there power supply "on board" and went w/ mostly separate power supplies.

As well as the manual dimmer as above more flexible control can...
Forum: Lighting 07-29-2015, 05:40 PM
Replies: 13
Views: 291
Posted By jeffkrol
Based just on that the plus PRO is more in line...

Based just on that the plus PRO is more in line w/ your worries.
$70 more (approx) than your other choices though.
Forum: Lighting 07-29-2015, 02:58 AM
Replies: 15
Views: 332
Posted By jeffkrol
The 10,000k should encourage some red pigments...

The 10,000k should encourage some red pigments but overall the 6500k and 10000k are not real good at expressing the pigments. You need a bit more red..
...
Forum: Lighting 07-28-2015, 11:49 PM
Replies: 15
Views: 332
Posted By jeffkrol
Out of curiosity .. how? There is no Evo...

Out of curiosity .. how? There is no Evo 6500/10000k stock light that I am aware of.
There is 6500k and there are 10000k/actinic..

and your light is too high..


https://youtu.be/y4WNMBKKVjU
Forum: DIY 07-24-2015, 04:37 PM
Replies: 3
Views: 155
Posted By jeffkrol
I'm sure each manuf. would tell you they are...

I'm sure each manuf. would tell you they are "different" ;)

Best to write directly to Perspex and ask them about it's pros and cons for your useage. They would normally track "competitors" quite...
Forum: DIY 07-24-2015, 03:21 PM
Replies: 3
Views: 155
Posted By jeffkrol
http://perspex.com/product-ranges/perspex/clear/ ...

http://perspex.com/product-ranges/perspex/clear/

info@perspex.com

;)

Only color is clear 000
Forum: Lighting 07-23-2015, 09:14 PM
Replies: 15
Views: 372
Posted By jeffkrol
"heatsink plaster" is just a thermally conductive...

"heatsink plaster" is just a thermally conductive silicone based compound and it's Chinese name. Like caulk.
as such it is removable like caulk.
not sure what "adhesive" is though. I suspect it to...
Forum: Lighting 07-23-2015, 04:41 PM
Replies: 15
Views: 372
Posted By jeffkrol
first : Really holds true. and "any"...

first :


Really holds true. and "any" paste is better than none.

your need for "high quality" paste w/ depend on the heat characteristics/density of the LED's/ heat sink ect.

I've...
Forum: Lighting 07-23-2015, 01:08 PM
Replies: 3
Views: 150
Posted By jeffkrol
Though in general agreement w/ roadmaster there...

Though in general agreement w/ roadmaster there is a body of literature on effects of various groups of organisms under different light "color"
As an example:...
Forum: Lighting 07-22-2015, 03:47 PM
Replies: 2
Views: 241
Posted By jeffkrol
buy a ton of cheap 3W emitters on "The bay" ...

buy a ton of cheap 3W emitters on "The bay"

221475495932

50= 6500k 3W /$13.88
Figure 2.5" on center 1 row. Use 2 rows minimum for tanks wider than 12"
90 degree lenses optional but...
Forum: Lighting 07-21-2015, 03:30 PM
Replies: 15
Views: 572
Posted By jeffkrol
Kessil's are restricted to 6000-9000K no...

Kessil's are restricted to 6000-9000K no "sunsets"
AFAICT yes you can do "some" adjustments
See quick set 6 point
and acclimation modes...
Forum: Lighting 07-19-2015, 03:11 AM
Replies: 10
Views: 374
Posted By jeffkrol
First th bad The Chinese "Bridgelux type" are...

First th bad
The Chinese "Bridgelux type" are less efficient than good bin "name brands". Roughly in the range of 50 lumens/watt
Color temp is "ballparking in general.
The good is they are 1/3rd...
Forum: DIY 07-17-2015, 10:54 PM
Replies: 51
Views: 1,432
Posted By jeffkrol
No that is the fan current. not the PWM "signal"...

No that is the fan current. not the PWM "signal" current.
MrMan is correct.
So IF the PWM used the same frequency it would work. UNFORTUNATELY they don't..
Forum: Lighting 07-17-2015, 08:42 PM
Replies: 10
Views: 374
Posted By jeffkrol
You could go w/ something like this. Spectrum...

You could go w/ something like this.
Spectrum is customizable
Technically, you can build it w/ higher quality diodes for about the same price or or more (less would be a bit tricky but...
Forum: DIY 07-17-2015, 08:31 PM
Replies: 51
Views: 1,432
Posted By jeffkrol
LDD-H's run @ 100-1KHz.. so ganging them looks...

LDD-H's run @ 100-1KHz.. so ganging them looks out of the question.. Frequency mis-match..

as to the current I assume I mis-read and there are 2 "versions" 5V and 12V and none of the specs were...
Forum: DIY 07-17-2015, 03:50 PM
Replies: 51
Views: 1,432
Posted By jeffkrol
From the specsheet and "if" I'm reading this...

From the specsheet and "if" I'm reading this correctly PWM curcuit can go as high as 140mA peak w/ 70mA average..

This w/ or wout ganged w/ the LDD "may" be more than the PWM out can handle..
...
Forum: Lighting 07-17-2015, 03:24 PM
Replies: 7
Views: 275
Posted By jeffkrol
Pretty sure you have shadowing in the upper...

Pretty sure you have shadowing in the upper inches of your tank..
Personal thing. Probably should have stated it..
Forum: DIY 07-17-2015, 12:49 PM
Replies: 51
Views: 1,432
Posted By jeffkrol
W/ the correct fan it is possible.. There are...

W/ the correct fan it is possible.. There are different "types" of PWM and/or speed control fans..Not my forte so I'll just stop there.

That said I'd prefer a more "data controlled" fan based on a...
Forum: Lighting 07-17-2015, 03:45 AM
Replies: 7
Views: 275
Posted By jeffkrol
One light is too "narrow" for a 40B...

One light is too "narrow" for a 40B anyways...
Showing results 1 to 25 of 250

 
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