DIY SMD LED Pendant Light - Page 14 - The Planted Tank Forum
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post #196 of 253 (permalink) Old 06-12-2014, 06:58 PM
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Hoppy, great build! It's really neat to see that cheap ebay LEDs are useable.

By any chance have you re-run your PAR tests recently to see if the LEDs are dropping in intensity? If so, how many hours and at what brightness do you think they have been running them at? Thanks!
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post #197 of 253 (permalink) Old 06-12-2014, 07:45 PM Thread Starter
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Originally Posted by liam2317 View Post
Hoppy, great build! It's really neat to see that cheap ebay LEDs are useable.

By any chance have you re-run your PAR tests recently to see if the LEDs are dropping in intensity? If so, how many hours and at what brightness do you think they have been running them at? Thanks!
I haven't done any follow-up PAR tests, and the tank is torn down now, in preparation for a move to an apartment. I ran them at "full power" - whatever the 12 volts they are designed for makes them operate at. I ran them 8 hours a day.

Hoppy
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post #198 of 253 (permalink) Old 06-18-2014, 08:11 PM
KnH
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Hoppy, on a 36 inch Length tank with the substrate at 30" from the light.
How many rows would you recommend to get a 35 parr?
Do you still suggest using the 5630 tapes.
what color of white or mix , cool - warm - natural?

Thanks
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post #199 of 253 (permalink) Old 06-18-2014, 08:42 PM
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Quote:
Originally Posted by KnH View Post
Hoppy, on a 36 inch Length tank with the substrate at 30" from the light.
How many rows would you recommend to get a 35 parr?
Do you still suggest using the 5630 tapes.
what color of white or mix , cool - warm - natural?

Thanks
This combination produces a 5000K look with a very nice spectrum:

4x 6500K
1x 2700K
1x Red
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post #200 of 253 (permalink) Old 06-19-2014, 12:18 AM Thread Starter
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Originally Posted by KnH View Post
Hoppy, on a 36 inch Length tank with the substrate at 30" from the light.
How many rows would you recommend to get a 35 parr?
Do you still suggest using the 5630 tapes.
what color of white or mix , cool - warm - natural?

Thanks
Yes, I'm using 5630 SMD tapes. They are the cool white ones. My light produces 35 PAR at 30 inches and is used on a 36 inch long tank, a standard 65 gallon tank. See: DIY SMD LED Pendant Light

Hoppy
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post #201 of 253 (permalink) Old 06-19-2014, 02:02 AM
KnH
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Yes, I'm using 5630 SMD tapes. They are the cool white ones. My light produces 35 PAR at 30 inches and is used on a 36 inch long tank, a standard 65 gallon tank. See: DIY SMD LED Pendant Light
How many rows are you using ?
On your first post , 8 of the cool white plus 2 green and red,
would the 8 cool white be enough by them selfs or would I need the green and reds or just add 4 more white to replace the red& greens?

Thanks
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post #202 of 253 (permalink) Old 06-19-2014, 01:45 PM
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Just fitted my 4 footer with cool white, 9x1m strips... one set is quite blue, and the fish are now very bland looking, so will be adding red, maybe green... But the plants seem to like it so far ;-)

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post #203 of 253 (permalink) Old 06-20-2014, 02:52 AM Thread Starter
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I have 10 rows of cool white, and 2 rows each of red and blue. The red and blue are lower wattage LEDs, and I found they added nothing to the light - no added PAR and no effect on the color. I continue to use them for the same reason people climb a mountain - they are there. Before duplicating this for your set-up be sure to read the whole thread. I get a lot more PAR with the reflector lined shade than without, so that shade is a critical part.

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post #204 of 253 (permalink) Old 06-20-2014, 09:51 AM
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Hoppy.. don't the red and blue change colours on the fish?
I have a paradise fish, that used to have iridescencent red+blue dots under fluorescent lighting, now it's almost grey! :-(
... as are my glow light tetras.
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post #205 of 253 (permalink) Old 06-20-2014, 12:48 PM
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Hoppy.. don't the red and blue change colours on the fish?
I have a paradise fish, that used to have iridescencent red+blue dots under fluorescent lighting, now it's almost grey! :-(
... as are my glow light tetras.
Sent using Tapatalk from my ZX81
not certain why he had no noteable change in the color.. and not sure what LED you have.. but "colored" LED additions (well sometimes just different whites) have a noticeable change on fish color.

ONE thing, unlike fluorescents LED's have little purple/UV.. which could make a difference in some fish.

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post #206 of 253 (permalink) Old 06-21-2014, 01:28 AM
KnH
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Quote:
Originally Posted by Hoppy View Post
I have 10 rows of cool white, and 2 rows each of red and blue. The red and blue are lower wattage LEDs, and I found they added nothing to the light - no added PAR and no effect on the color. I continue to use them for the same reason people climb a mountain - they are there. Before duplicating this for your set-up be sure to read the whole thread. I get a lot more PAR with the reflector lined shade than without, so that shade is a critical part.
The heatsinks (2)I have know are a little over 2" wide, so i can get 5 rows on each one , I ordered enough SMD for 4 rows Cool white and One rows warm white. I will have Ten rows total, Know I just have to wait on a slow boat.
Power supplies are on there way also.

Im starting to look around for an easy way to dim them 12v@ 20amps.

Thanks for doing this project and helping out.
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post #207 of 253 (permalink) Old 06-21-2014, 04:58 AM
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Quote:
Originally Posted by KnH View Post
The heatsinks (2)I have know are a little over 2" wide, so i can get 5 rows on each one , I ordered enough SMD for 4 rows Cool white and One rows warm white. I will have Ten rows total, Know I just have to wait on a slow boat.
Power supplies are on there way also.

Im starting to look around for an easy way to dim them 12v@ 20amps.

Thanks for doing this project and helping out.
How many 12v power supplies are you running? If you are running multiples I assume you won't be pushing all 20A through one so just get one of these per power supply.
Factop Manual Dimmer Adjustable Brightness DC 12V-24V 8A For Single Color Led Strip - Wall Dimmer Switches - Amazon.com Factop Manual Dimmer Adjustable Brightness DC 12V-24V 8A For Single Color Led Strip - Wall Dimmer Switches - Amazon.com

If you need more powerful ones you can get them from the bay. They have 20A dimmers there for cheap.
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post #208 of 253 (permalink) Old 06-21-2014, 02:45 PM
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I'm actually scaling up a bit
Voltage: DC 12V,Wattage: 15W/M , 75W/Roll 5 meter

Going to have 10 strips 60" long, 2 heat sinks 2" x 60",

5 strips each 4 cool white & 1 warm white

I have on hand. 2- 12 Volt Power Supply - 10 Amp

60" x 5 = 300" / 39"(meter) =7.62 meters
7.62 meters x 15 watts per meter = 115 watts

From this http://www.supercirc...-amps-converter

12v, 115 watts = 9.584 amps

I guess I could run, 3. Power supply / dimmers. The dimmers max 8 amps each
1- 4 cool white strip, 7.67 amps
2- 4 cool white strip
3- 2, warm white
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post #209 of 253 (permalink) Old 06-21-2014, 03:04 PM
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Originally Posted by KnH View Post
I'm actually scaling up a bit
Voltage: DC 12V,Wattage: 15W/M , 75W/Roll 5 meter

Going to have 10 strips 60" long, 2 heat sinks 2" x 60",

5 strips each 4 cool white & 1 warm white

I have on hand. 2- 12 Volt Power Supply - 10 Amp

60" x 5 = 300" / 39"(meter) =7.62 meters
7.62 meters x 15 watts per meter = 115 watts

From this http://www.supercirc...-amps-converter

12v, 115 watts = 9.584 amps

I guess I could run, 3. Power supply / dimmers. The dimmers max 8 amps each
1- 4 cool white strip, 7.67 amps
2- 4 cool white strip
3- 2, warm white



Quote:
1. Programmable led timer/Dimmer controller

2. Operating temperature: -20 to 60 degrees

3. Supply voltage: DC12-24V

4. Output: 5 channels

5. Output: Five CMOS drain-open output

6. Control variant: common anode

7. Max load current: 4Amps each Channel
You can run 2 2A "strips" (really one strip eletrically) per channel giving you the needed 10

you can double that w/ out increasing amp draw by going w/ 24V and paralleling 2 "strips".. though that poses problems of its own..

another example:
Quote:
.Working temperature: -20-60C

2.Supply voltage: DC12V
3.Static power consumption: < 0.5W
4.Net weight: 200g
5.Gross weight: 300g
6.External dimension: 120MM*69MM*24MM
7.Packing size: 169MM*135MM*53MM
8.Output: 5 channel
9.Maximum output current: 20A
http://www.alibaba.com/product-detai...902052432.html

Last edited by jeffkrol; 06-21-2014 at 03:15 PM. Reason: exMPLE
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post #210 of 253 (permalink) Old 07-09-2014, 05:25 PM
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Hey if anyone could help
I want to do either 3 or 4 18in 5630 strips at about 15-17in off substrate in a 60p. I've done some research and it seems someone did this with 5050 smd in a 45p and got 50-70 par which is way more than the calculations in this discussion where Hoppy is using 8 strips.
Here is the link just translate it, it is a user on this forum;
http://prirodni-akvarium.cz/index.php?id=mereni

Anyway what do you guys think I should use for med-high light / 50-70 par in a ADA 60p 3 or 4 strips?

Thanks

Btw I plan on retro fitting the archaea 36w pc fixture with the strips
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