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Old 06-17-2013, 03:30 PM   #181
Hilde
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Quote:
Originally Posted by Big O View Post

those lights are ugly
Then build a hood for it.
Quote:
Originally Posted by m00se View Post
I just wish these units weren't so darned ugly. Anyone feel like examining theirs and comment on what it would take to remove the guts and re-house these in an aesthetic fixture?
Seems it would be easier to just buy the little cree LED or LED bulb and put it in the lamp you want to use.

Last edited by Hilde; 06-17-2013 at 04:29 PM.. Reason: added
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Old 06-17-2013, 03:42 PM   #182
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Sethjohnson30 what has happened with your rack with LED's. Tried to send you a PM but it is full.
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Old 06-17-2013, 04:28 PM   #183
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Originally Posted by ApplestoApples View Post
I have a 10w on my 10 gallon but I ordered it in warm white not cool white. Will it still grow my plants or do I need to get a cool white?
I am afraid that light is only good for moss, anubias and ferns. Most plants grow with 6500k rating bulbs (cool white). Here flood light ratings.
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Old 06-17-2013, 04:34 PM   #184
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Originally Posted by acitydweller View Post
I'm interested in getting two 10w floods for two 10g tanks but was concerned with both the Kelvin and light spread being too wide. How high did you both hang your fixtures?
For my 10G got it on top of the glass and the spread is the same that I had with a LED single bright light strip. The edges have some shadows but the light is stronger and cheaper than the LED single bright light strip.

To make it look better and still keep it cheap using scrap board from Home Depot, which only cost a few dollars, to make a hood over it which will sit on the edges of the tank.
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Old 06-17-2013, 07:54 PM   #185
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Our spotlight LEDs used here outside a hotel in Sidmouth, in the southwest coast of England where I'm currently vacationing with my English significant other.

Sent from my Samsung Galaxy S III using Tapatalk 2
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Old 08-19-2013, 11:49 AM   #186
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A lot of good info on this thread.

I have a question though, I want to buy some of these flood lights to use on a 90G, looking for around medium par @ substrate. The light will be 24" from substrate what wattage do you guys recommend and what config? e.g. 4 x 20W, 3 x 30W, 1 x 100w, etc.
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Old 08-19-2013, 04:37 PM   #187
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Originally Posted by gt turbo View Post
I want to buy some of these flood lights to use on a 90G.
What config? e.g. 4 x 20W, 3 x 30W, 1 x 100w, etc.
I believe you will need 3 x 30W for the light to reach the substrate. For a 10 watt provides low light for a 10G. Before you buy them check out the cost of T5HO (24watts) light strips at a hardware store. You could rig something like Hyzer did but have it closer to the substrate.
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Old 08-23-2013, 06:02 AM   #188
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I'm thinking of using 3 20w directly on the glass lid of my 20 long. It's cheap at $46 shipped, but it doesn't have the plug. Would it be possible to wire all three to one laptop charger? Can I add a dimmer?

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Old 08-23-2013, 12:44 PM   #189
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Quote:
Originally Posted by TaDoey View Post
I'm thinking of using 3 20w directly on the glass lid of my 20 long. It's cheap at $46 shipped, but it doesn't have the plug. Would it be possible to wire all three to one laptop charger? Can I add a dimmer?
Looks like each chip has a Vf of 30V.. 3 in series you'd need a 90V DC power supply and you'd have to bypass the built in driver and add one of your own..and a 32V PS and if you want dimmable drivers. Good thing is
they only draw

Those have built in drivers running off line current (110-230AC).. not DC

This is a dimmable driver capable of running 3-20W LEDs..(BTW:from the specs of the driver it looks like is SHOULD be 3 in parallel.. but on fleabay they show 3 in series
UNLESS there are major different V(f) of 20W chips..ODD)
Quote:
Input Voltage: 85-265V AC
Output Voltage: 24-34VDC
Current: 600-1950mA
$37.50 from fleabay...


In other words.. until some price crash.. Dimming is a premium..

Last edited by jeffkrol; 08-23-2013 at 01:01 PM.. Reason: clarity
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Old 08-23-2013, 01:47 PM   #190
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Quote:
Originally Posted by jeffkrol View Post
Looks like each chip has a Vf of 30V.. 3 in series you'd need a 90V DC power supply and you'd have to bypass the built in driver and add one of your own..and a 32V PS and if you want dimmable drivers. Good thing is
they only draw

Those have built in drivers running off line current (110-230AC).. not DC

This is a dimmable driver capable of running 3-20W LEDs..(BTW:from the specs of the driver it looks like is SHOULD be 3 in parallel.. but on fleabay they show 3 in series
UNLESS there are major different V(f) of 20W chips..ODD)

$37.50 from fleabay...


In other words.. until some price crash.. Dimming is a premium..
Well darn... is there some way that I can just wire all three into one wire so that it only takes up one outlet instead of three. The lights are ac instead of dc so depending on the situation it could be a positive or a negative.

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Old 08-23-2013, 01:54 PM   #191
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Quote:
Originally Posted by TaDoey View Post
Well darn... is there some way that I can just wire all three into one wire so that it only takes up one outlet instead of three.

Yes...just like you would do w/ a power strip... 3 into 1..
Just wire all the AC in parallel to one plug...

Quote:
Originally Posted by TaDoey View Post
The lights are ac instead of dc so depending on the situation it could be a positive or a negative.
The lights are AC.. no positive or negative.. just phase... shouldn't make any difference but stick w/ all one color..
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Old 08-23-2013, 01:58 PM   #192
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Originally Posted by jeffkrol View Post
Yes...just like you would do w/ a power strip... 3 into 1..
Just wire all the AC in parallel to one plug...



The lights are AC.. no positive or negative.. just phase... shouldn't make any difference but stick w/ all one color..
How much current would all three in a parallel pull?

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Old 08-23-2013, 04:43 PM   #193
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Quote:
Originally Posted by TaDoey View Post
How much current would all three in a parallel pull?

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2-6Amps on the DC side.. I doubt if it anywhere near 6 though..
(3x times the driver rating)..

As to AC.. whatever the lamp states x3 ..Most likely a whopping amp or less...
(3x the fixture rating)
Best guessitimate:
Quote:
Dependent upon model selected:
• 8 to 26 Fixture Watts
• 6 to 24 LED Watts
26 "fixture watts" =0.24A x 3= 0.72A
Quote:
Light- 60W LED 3 W 0.30 A
http://www.metrosolarmatics.com/appl...alculator.html

For further review:
Quote:
Dimming
The dimmability of LED MR16 lamps is largely unknown at this time. The CALiPER program tested
five LED MR16 replacements with 10 different dimmers. One of the LED MR16 lamps claimed to be
dimmable, two provided no indication regarding dimmability, and two had product literature stating they
were not dimmable. Upon testing, it was found that all five LED MR16 products were dimmable with at
least half of the sample dimmers, including magnetic low-voltage, electronic low-voltage, and electro-
magnetic (standard, resistive-type for incandescentlamps) dimmers. Unlike halogen MR16 lamps that
shift to lower CCT values, the LED MR16 replacements that were tested have stable color when dimmed
http://apps1.eere.energy.gov/buildin...mark_11-08.pdf

Last edited by jeffkrol; 08-23-2013 at 04:54 PM.. Reason: clarity
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Old 09-10-2013, 06:23 PM   #194
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Wanted to bump this back up. Good affordable lights and its led so less power used!
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Old 09-18-2013, 04:33 PM   #195
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My experience with cheap Chinese LED floodlights:

I have purchased 15 10w, 6 20w, 6 50w, and the fish store I work for ordered an additional 20 20w fixtures. These were from three different manufacturers: VVME and two ebay distributors - internals and casings were almost identical on all but drivers varied with one, screws and wire caps varied on all. So far (all purchased less than 8 months ago) between the store and me all but 14 of the units have stopped working. So of the 47 purchased less than 30% are still working after less than a year.

They are very cheap and provide very nice light while they operate but don't expect to get much life out of the units. In every instance it was a failure of the driver which can be purchased for very cheap but it gets to be a bit of a headache repairing them all the time.

I will admit that my lights were being run in a hot environment often in the high 80s to high 90s. Perhaps the drivers wouldn't have burnt out somewhere cooler.

Only one of these is of the original I installed. Two of the replacements lights have failed in the last week:



A few of the lights I've repaired; I started mounting the drivers to larger heat syncs to get a bit more life out of them:



Always have to have backup drivers on hand:



Just part of the graveyard:



I was a big fan the first couple months but at this point I'm wishing I just purchased a legitimate aquarium light.
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