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Old 07-27-2009, 02:22 AM   #1
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Wattage to Volume ratio?

hey guys can anyone help me out? whats the rule of thumb for how many watts of lighting you need per gallon/liter of water for the tank? Also my tank is 300L but relatively deep(75cm) for its length(90cm) so will I need to take this into account?

I heard its 1 watt/gallon, but then have heard other ideas aswell....

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Old 07-27-2009, 02:37 AM   #2
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Is it A freshwater planted tank? Or is it just fish. If its Reef I would go with a Nova T5 or Metal halides with around 500Watts. If its FW planted, Then a PC light would work fine. If its just fish, then any light you want.
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Old 07-27-2009, 05:32 AM   #3
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hey man, planted setup with fish, not extreamly heavily planted though. SO what do you mean by a PC light? cheers
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Old 07-27-2009, 05:53 AM   #4
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PC is Power Compact fluorescent.
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Old 07-27-2009, 02:52 PM   #5
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What plants are you planning to have? How high tech you want to go? <ie CO2, ferts, etc?>

If you want just a few plants, you are best to go with low light (1-2 WPG) to avoid algae. Your tank is about the same size/depth as mine & my 4x32W = 128W of T8 works fairly well at low/med level. That is about the same light level as 2x54W T5-HO, or 2x55W PC. <Those 3 are your best choices IMO .... 1 WPG is too little light ... tried it, & nothing grows.>
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Old 07-27-2009, 04:32 PM   #6
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i am going to have to agree. get a 2x54w T5 ho it should be ok for you. how much light you will need over the tank depends on what type of plants you are adding not how many.
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Old 07-28-2009, 03:59 AM   #7
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hey guys thanks for the help.

to anwser some questions; i aim for a resonable setup, i dont have the money to afford a high tech system, in terms of CO2 i thought id try a DIY injector from yeast culture. Plant wise im not fully edjucated on the various species yet but want a variety of grasses, shrubs and taller plants, at a moderate quantity but not the intensity that you see in 'Winner of Planted Aquarium 2009' scale. Hope that helps?

So aiming for a bit over 100W by the sounds then.... What about 3 x 38W bulbs?
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Old 07-28-2009, 04:57 AM   #8
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Arrow

You know i was interested in it too, so your advices are rather helpful for me. Tnx a lot! :p
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