Mars Aqua Chinese LED review (Ebay)
- Thread starter Atomic081
- Start date
garygonzales
Member
i used the 3 watt led .just search 3 watt led chip.....i couldnt find any epistar led in the color i wanted..
Scottedontknow
New member
Just Ordered one for myself! along with some 10k, 20k and UVs! can't wait to get it up and running!
I guess I'm now really curious on how the colors are being determined. Like I said I was sent 20 or so Blue LEDS in one baggie and 20 or so of the other LEDS in another baggie by the mars people. When I put the LED that was not the blue LED in any spot the color changed based on what position I Put it in telling me the voltage/color is determined by its location NOT the LED Itself. I'm half tempted to pull one back apart and take my DVOM to see if the voltage is actually different at each position to determine its color.
Dave
Dave
MorganAtlanta
New member
I don't think that is possible. LED color is a property of the phosphors in the LED. An RGB led is actually separate red, green and blue LEDs in one package. They will have three separate wires going in to control in input for each channel.
Yeah I have no idea. I know that of the 40 plus LED's I replaced this weekend in my 3 mars aqua lights each one has remained the same color it was prior to putting in a new bulb. The only one that was different was the blue LED.
Bagabaga
Member
One visual inspection with your ohm meter might do the trick. Test the led ohm and it should light up for you and give a reference to each one. Each led has a resistor on your board? And if I'm not mistaken the resistor won't determine color. Just regulate the voltage to the led itself.
ifarmer
New member
That is too much blue. Nobody grows enjoy their tank like that.
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madweazl
Member
I believe the LED will illuminate below 1v but the drivers arent capable of going below 1v.
Ok I tried to check resistance w/ my DVOM and they did not illuminate unfortunately. I looked at the packaging they sent me and the blue LEDS say 460nm and the other say 3500k. The odd thing is the 3500k LEDS will change to whatever color they were before. I've had to change out at least 20 of the non blue LEDS and they all still are the same color as this top diagram shows below. And all 3 have the same light color orientation so there is no way that I just so happened to burn out 20ish 3500k LEDS, especially since there are only 6 per light.
**Update**
After looking further, sure enough I have a few 3500K bulbs where there should be 12000k, etc. I am going to leave them for now as there aren't too many and it looks fine in a freshwater tank but I'll buy some more LEDS online. Anyone have any suggestions what bulbs would bring out the color of freshwater fish w/o causing them any stress?
Thanks
Dave
**Update**
After looking further, sure enough I have a few 3500K bulbs where there should be 12000k, etc. I am going to leave them for now as there aren't too many and it looks fine in a freshwater tank but I'll buy some more LEDS online. Anyone have any suggestions what bulbs would bring out the color of freshwater fish w/o causing them any stress?
Thanks
Dave
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Feel dumb asking this but are these resistors??
https://www.dropbox.com/s/b8u3sat78rdpt71/2016-07-05 21.02.47.jpg?dl=0
https://www.dropbox.com/s/b8u3sat78rdpt71/2016-07-05 21.02.47.jpg?dl=0
Reeftanks6
Active member
Quick question, I am going to be purchasing a 180 gallon tank and was wondering if these lights would work. I would be going with the 300w, my question was will 2 of the 31" lights be enough to light a 180? Or do I get 2 31" and one smaller sized one?
