Need help with TEK fixture - The Planted Tank Forum
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post #1 of 4 (permalink) Old 09-12-2013, 01:27 AM Thread Starter
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Need help with TEK fixture

i have this fixture, the bulb seems to flicker sometime and sometime they work perfectly fine, stays on all day. my best guess is that problem is due to sockets, but i could be wrong. i am thinking about replacing the sockets to see if that would solve the problem.

i was thinking about getting these but not sure which one to get? non-shunted or shunted sockets?
  • Program and rapid start ballasts require non-shunted sockets.
  • Instant start ballasts require shunted sockets.
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post #2 of 4 (permalink) Old 09-12-2013, 04:50 AM
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The Tek fixtures have a instant start ballast. I have a Tek 4x54 and a few weeks ago added a Tek retrofit and it came with a Fulham Workhorse 5 ballast which is a instant start ballast so I was a little confused as I always thought that T5 HO were suppose to use a rapid start ballast but after talking to a rep and a few people on the forum I was told that a instant start ballast works for our applications in the aquarium hobby because the lights are not being turned on/off several times during the day which can shorten the bulb life. With that being said I would use the shunted socket. These are the sockets that came with my retrofit kit.

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post #3 of 4 (permalink) Old 09-13-2013, 12:30 AM
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I just replaced both ballasts on mine. I have the 6 x 24watt. It was easy to do and I remember looking at the sockets and thinking that I was glad I didn't have to change those. I will have to change them one day so I too am interested in which sockets need to be used.
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post #4 of 4 (permalink) Old 09-15-2013, 05:22 AM
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from what i remember they use shunted sockets, but please dont hold me to that - its been a long time since i had to double check the info with sunlight

if you want to be absolutely sure of which socket you need you can contact sunlight supply directly

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