Question about Bed Time?

[Nu2SW]

I am curious what you guys do when its bedtime for you and the tank. Do you shut off all lights on the tank or do you have some white or blue LEDs?

 

[bladeruner143]

I'm thinking about putting in some Blue LEDs that I have housed in project boxes but Im afraid that my MH might melt them!

 

[matttaylor]

I had been thinking about using some blue led's, but the wave maker i bought has a very bright blue power switch the illuminates half of my tank, so no need for the led's.

 

[casalt]

just an idearr

just an idearr

 

[P.Kelly]

I have blue LED's the cheap ones that look kind of hexagonal, but have a square base, and you can daisy chain them. They are next to my 175w MH and I've had no problems with the lights or wires. I have 2 lights and 2 4" fans that run when the temps hits 79.

I have blue LEDs on my 92g and white on my 10g. The white looks more natural, like moon light, but the blue is mo' bedda. Like actinics you get some fluorescence from the corals and it looks sa-weet!

 

[funman1]

I use the white ones for dusk / dawn and blue ones for night..
No moon cycle, just on

 

[Auntbeez]

I don't know how it affects the corals, but the blue looks awesome.
I have white in the 75 and blue in the 29 (wish they both were blue).

 

[Buskey]

I use white ones, Not by choice they are built into my current T5 set up! We have blue ones in the nanos,

 

[pbetito]

I saw someone use all blue Xmas lights and to my surprise.... IT LOOKED AWESOME! Just an idea....

 

[Nu2SW]

I have blue and whites on my fixture.

I just used to keep the tank off, I wasnt sure if that was doing any harm to the corals.

So im gonna leave my whites on at night and see how the tank does.

 

[wh1te]

<a href=showthread.php?s=&postid=10947958#post10947958 target=_blank>Originally posted</a> by pbetito
I saw someone use all blue Xmas lights and to my surprise.... IT LOOKED AWESOME! Just an idea....

casalt did it with blue christmas lights and it looks like a great fairly inexpensive way to do moonlighting.

 

[bored4long]

What hurdles would there be in cutting down a 180 count LED light string to say 20-40 LEDs? Does the input voltage need to be dropped with a resistor?

 

[Nu2SW]

<a href=showthread.php?s=&postid=10949930#post10949930 target=_blank>Originally posted</a> by bored4long
What hurdles would there be in cutting down a 180 count LED light string to say 20-40 LEDs? Does the input voltage need to be dropped with a resistor?

That would be steves question.....

Any input steve?

 

[funman1]

"Most" (All that I've seen, but can't be sure they are all like this)
LED light strings are wired parallel AND Series.

So like the LED string lights I have, run on a single 24VAC wall-wort and the string is broken up into 8 LED sections, so the 8 LEDs are wired in series.
So removing one LED drops 8 LEDS total from the string.

So if you remove one and drop part of the string because the other GROUPS are wired parallel it has no effect on them.

So my strand of 48 LEDs is broken up into 6 sections (Groups) of 8 LEDs each.
So you could drop the string count of LEDs by multiples of 8 with no ill effects to the other lights.

Hope that made sense to someone out there


This is most noticeable when you remove one LED from the string then entire set does not die.