5,000 or 10,000K for a planted tank - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 20 Old 11-01-2008, 09:13 AM Thread Starter
Kim
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5,000 or 10,000K for a planted tank

The bulbs that I can get for my Home Depot light fixture come in only 3 K ranges. I know the soft light is a no go, but the others are 5,000 and 10,000K. Which would be better for a planted tank, or would neither be good in which case I would have to look elsewhere? Thanks.
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post #2 of 20 Old 11-01-2008, 11:35 AM
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Plants do best under 6700k.

How big is your tank, first off? A smaller tank can probably be fine with 5000k, but a larger one might need 10k. Again, 6700k is ideal.
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post #3 of 20 Old 11-01-2008, 04:25 PM
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have to agree, 6500-6700 is ideal for plants. 10K and 5K really don't have the right spectrum for best growth and can lead to lots of algae problems.
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post #4 of 20 Old 11-02-2008, 07:32 AM Thread Starter
Kim
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The tank is a 29 gal. I think I will just look around at fish stores to see if they carry bulbs in that range. Thanks.
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post #5 of 20 Old 11-02-2008, 05:26 PM Thread Starter
Kim
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Oh, just thought of this. What if I did one 5000 and one 10000? Would that work or am I way off base? The reason that I ask is that I am not sure that any of my fish stores sell T12 plant bulbs.
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post #6 of 20 Old 11-03-2008, 02:03 AM
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If you did one 5000, and one 10000, then you would need to get smaller lighting fixtures too hehe... because one 10k and one 5k both suited for a 29 gal will be overkill IMO. You'd have to get different sized lighting fixtures for it too then... a 29 Gallon is still on the smaller side, and a 5k would be fine on it, or if your lighting fixture has 2 bulb inputs, get two 5k bulbs...

I agree with Cody... A 5k bulb would be fine, because its not so strong, it won't produce algae blooms...Algae blooms are pretty much caused from great lighting(or very high rated lighting) with not enough Co2 injection...

If it were up to me, I'd go with the 5k tube, and don't go for t12... better to find a t5 light, but t8 is fine too...

Hope that helps

Light travels faster than sound. This is why some people appear bright until you hear them speak.
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post #7 of 20 Old 11-03-2008, 03:45 AM
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+ make sure they are FULL spectrum bulbs.
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post #8 of 20 Old 11-03-2008, 03:54 AM
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/agree with onefish2fish

Light travels faster than sound. This is why some people appear bright until you hear them speak.
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post #9 of 20 Old 11-03-2008, 01:41 PM Thread Starter
Kim
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The lighting fixture is designed to hold 2 30 watt bulbs. That is how I came up with this idea. I would love to have T5 lighting, but unfortunately I just don't have the money for a really nice light fixture, so I opted to improvise with my home depot one.

I am also going to be doing DIY CO2.
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post #10 of 20 Old 11-03-2008, 05:40 PM
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Just so you know Kim, DIY Co2 will end up costing you the same amount within a year as a pressurised Co2 system...
The fixture is no doubtedly designed for t8 bulbs then? I'm not sure if this would work, and its kind of stupid, but maybe a t5 bulb might work in a t8 fixture. It's improbable, but hey, anything possible

Light travels faster than sound. This is why some people appear bright until you hear them speak.
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