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Old 03-28-2010, 10:54 PM   #1
cr500_af cr500_af is offline
 
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Why the Viper K2 stinks... and how I fixed it

The Viper K2 Deluxe light (the one with the fan and moonlights) has a SERIOUS design flaw. The fan, while it has its own hi/low rocker switch, takes its power from the ballast, which has only one power cord.

The problem is that if even if you run the light on a timer or controller, you cannot control the fan with one. You have a choice: either it's on the entire time the light is on (which in my firsthand experience will cool the tank TOO much), or it is off all the time, in which case you might as well throw the fan in the garbage. I guess you could say option 3 is you could stand by your tank all day and turn the fan on or off as needed, but I'm a touch busier than that.

The fan should have had its own power cord. Since it doesn't, the only fix is to add one for it.

All that is needed is a cord (which I cut off of an old dead powerhead) and a few minutes time.

Take the top off the ballast. On the back of the fan switch are three wires: one red on the center terminal and two blacks (one for high, one for low). The red/center wire is the main positive wire for the fan, feeding the switch its 120v power. It is wire-nutted with two other wires. Remove the one to the fan switch from this group, and wire nut the other two back together. Connect this (the red wire you removed) to the positive side of your new power cable (after, of course, you have drilled a path through the case and installed the wire and a rubber grommet).

Entering the case from the big "output" cable are four wires, some for the light and some for the fan. The BLUE wire is the neutral side of the fan. Follow the same procedure as before, removing it from its "group" and rejoining the other wires it shared a connection with. Connect the blue wire to the other side of your new power cable.

The grounds are all under a screw in the bottom of the case, just put your new ground under that screw with the others, using a crimp ring terminal.

That's all there is... now your fan has a dedicated cord so you can use a controller to turn it on or off as needed... all you have to do manually now is select high or low speed to use when it runs, and leave the switch in that position.

Last edited by cr500_af; 03-28-2010 at 11:03 PM.

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Old 03-28-2010, 10:57 PM   #2
AndyMan AndyMan is offline
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Nice one Barry, mine doesn't have the fan... want to give me a writeup on adding a fan?

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Old 03-28-2010, 10:59 PM   #3
cr500_af cr500_af is offline
 
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Heck, that's too deep for me...

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Old 03-28-2010, 11:13 PM   #4
weaglereefer weaglereefer is offline
 
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Nah, $5 fan from Walmart and some zip ties!

Nice writeup, Barry!

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Old 03-28-2010, 11:14 PM   #5
justindville1987 justindville1987 is offline
 
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thanks for the info in the brand. i was going to get it for a sump/frag tank.

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Old 03-29-2010, 12:13 AM   #6
cr500_af cr500_af is offline
 
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Quote:
Originally Posted by justindville1987 View Post
thanks for the info in the brand. i was going to get it for a sump/frag tank.
I'm overall happy with the light... but as a main light on the tank, the fan in stock form is useless. If I had it to do over I'd have gotten the one without the fan I think... even though now I'm happy with the end result. The built-in fan is a pretty good thing since it's impossible to put an add-on fan on top and make it look clean... and if I wanted a canopy I'd certainly be using a different light.

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Old 03-29-2010, 3:58 PM   #7
Jonathan Jonathan is offline
 
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Who makes the Viper?

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Old 03-29-2010, 5:09 PM   #8
cr500_af cr500_af is offline
 
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who makes the viper?
jbj. I hate how you can't do a company name/initials in all caps...

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Old 03-29-2010, 5:29 PM   #9
Acroholic Acroholic is offline
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Mrc
jbj
gmc
I wonder why that is?

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Old 03-29-2010, 8:59 PM   #10
weaglereefer weaglereefer is offline
 
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Gmc


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Old 03-29-2010, 9:00 PM   #11
cr500_af cr500_af is offline
 
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Babysitting software I guess... we can't YELL at each other.
For some reason you can single out a word, though. I don't know what the rules are.

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Old 03-29-2010, 9:23 PM   #12
Kirru Kirru is offline
 
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Quote:
Originally Posted by au01st View Post
Gmc

Haha,

JBJ
MRC
GMC....
ADD
ADHD lmao.. that what I got. not officially tho.

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Old 03-29-2010, 9:28 PM   #13
cr500_af cr500_af is offline
 
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So, is the words in front of it?
Jbj
mrc
gmc

Nope. Ok, Corey, fess up. What's making it work for you? I'm a mod, the software should allow me to yell in caps all I want.

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Old 03-29-2010, 9:33 PM   #14
Kirru Kirru is offline
 
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Quote:
Originally Posted by cr500_af View Post
So, is the words in front of it?
Jbj
mrc
gmc

Nope. Ok, Corey, fess up. What's making it work for you?

Hehe... I'm using Windows Vista x64 with Safari as my browser. grant it, that has nothing to do with it, I just thought I'd share... but all I am doing is pressing and HOLDING the SHIFT key and it seems to work lol

Maybe it is a sign that I should be a mod since it works for me lol j/k

JBJ
MRC
I WIN

Quote:
Originally Posted by cr500_af View Post
I'm a mod, the software should allow me to yell in caps all I want.
LOOKS LIKE ONLY THE COOL PEOPLE ARE ALLOWED TO YELL AT MODS... MUWAHAHAHAHA!

Seriously tho, that is kind of weird some people, well a very limited few can and some can't

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Old 03-29-2010, 9:35 PM   #15
weaglereefer weaglereefer is offline
 
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I just bumped up the font of the "mc" one size, lol.

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Old 03-29-2010, 9:36 PM   #16
Kirru Kirru is offline
 
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Quote:
Originally Posted by au01st View Post
I just bumped up the font of the "mc" one size, lol.
haha, i could tell actually... just wanted to see if I could or not lol i find this entertaining

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