4x65 watt PC - The Planted Tank Forum
View Poll Results: IS a 4x65 watt PC setup enough to grow anything ?
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post #1 of 14 (permalink) Old 03-02-2007, 02:21 PM Thread Starter
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4x65 watt PC

hey i found a 3 month old coralife 4x65 watt PC setup for a nice price. time for a question is it enough to grow anything i want ? or do i need more. Im redoing my tank and trying to decide between PC and HO T5. thanks


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post #2 of 14 (permalink) Old 03-02-2007, 02:38 PM
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More than enough light, I like less just to save electricity.
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post #3 of 14 (permalink) Old 03-02-2007, 02:50 PM
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I have one of those over my 110 gallon (they make 4x65 in 5' fixture too). I've actually been only burning half the lights because I wanted to slow down growth a bit and give me less maintenance, and stuff is still growing well despite that. With all four burning I had very good luck with stems and even managed to keep a tight short dwarf-sag foreground. More than enough, go for it!


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post #4 of 14 (permalink) Old 03-02-2007, 02:54 PM
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I've got one on a 75 and it has grown anything I put in the tank.
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post #5 of 14 (permalink) Old 03-02-2007, 02:57 PM Thread Starter
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think it will grow hc ?


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post #6 of 14 (permalink) Old 03-02-2007, 03:33 PM
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HC doesn't need that much light, what are you using now? I have 168 watts of normal output T-5 and it grows great.

The problem with the 4x65 fixtures is that you have to use the mounting legs to get even coverage. I like having a glass top so I use 3 t-5 aqualight double strips.

With the PC fixture I have had a couple bulbs burn out after a few months use.
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post #7 of 14 (permalink) Old 03-02-2007, 04:00 PM
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i was actually wondering the same thing, i've been looking at them at work for awhile and trying to figrue out if they'd work over a 75 gallon. i really wanted to go for a reef tank but i know in the long run it'll suffer during summer when i'm too busy to monitor everything. That and the over all power bill would be unreal with 14 other tanks running at home.

good to hear a friend has one he might be willing to sell cheap so i'll take a look at it and see .

i love this website i can find every answer i've been seeking here so far.

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post #8 of 14 (permalink) Old 03-02-2007, 04:17 PM Thread Starter
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ok well a new question for all 4x54 watt T5 or 4x65 watt PC ? which is better. Obviously the HO T5 but it will probabily be more expensive never the less would you like a 4x54 watt T5 or a 4x65 watt PC id love to hear some feed back.


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post #9 of 14 (permalink) Old 03-02-2007, 04:31 PM
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T5's are very nice - each bulb has an individual parabolic reflector so they put a lot more of the light into the tank than the fatter PCs which get a lot of strike-back (light reflecting off the reflector and back onto the bulb). I would bet that the light output is similar, even though the wattage is higher on the PCs. I bought a Tek light used, but haven't been using it yet.

I'd like to hear how they compare on longevity and heat output. Anyone have experience with this?


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post #10 of 14 (permalink) Old 03-02-2007, 04:35 PM
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4x54 T-5s, you can more easily try different bulb combinations, no fans, more even lighting, more intense, better reflectors.
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post #11 of 14 (permalink) Old 03-02-2007, 04:37 PM Thread Starter
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as ive read T5 Ho are good 12-18 months PC last 6-8... PC = really hot T5= cool like enough to touch thats why the tek lights have no fans where as PC lights often do.


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post #12 of 14 (permalink) Old 03-02-2007, 04:40 PM
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I've had the opposite experience with PC lifespans actually - I burn them until they pop, which is generally several years. The spectrum dips some in the beginning, but then levels off and stays steady pretty much till they're gone, and they continue to grow plants well even after ~3 years burning. I definitely agree with you on the heat issue though - they are HOT.


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post #13 of 14 (permalink) Old 03-02-2007, 04:50 PM Thread Starter
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thanks for the input i just found a place that sells the 4x54 watt TEK light for 286 dollars american with the cable mount !


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post #14 of 14 (permalink) Old 03-02-2007, 07:00 PM
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i have a 4-65 watt pc fixture over my (empty for now) 75 gallon and even with the plexiglass i have as a top for my tank its hard to look into the tank lol. i can bet you its not going to look much differint with the water in.

as for the pc vs t5. i think you would be happier with the t5 fixture i dont have any first hand experiance with t5's but from what i read the t5's are the best for plant growing after MH lights. if i hadent already bought my pc fixture i would definetly have bought the 4 light t5 fixture.
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