light question - Tropical Fish Keeping - Aquarium fish care and resources

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post #1 of 12 Old 07-01-2013, 06:29 PM Thread Starter
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I should probably know this but, I got a 10 gallon tank, I'm going to set up at work. Of course, I want it to have live plants. If the hood holds 2 incandescent bulbs of 15 watts each, would that be considered medium, high light, what? Need to know so I can figure what plants I can get.

Gwen

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post #2 of 12 Old 07-01-2013, 07:19 PM
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Use two CFL Daylight bulbs, 10w each. These are the spiral bulbs. Daylight means 6500K. I have these over my 10g and 20g, and they work fine.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #3 of 12 Old 07-01-2013, 07:36 PM Thread Starter
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Use two CFL Daylight bulbs, 10w each. These are the spiral bulbs. Daylight means 6500K. I have these over my 10g and 20g, and they work fine.
Thanks Byron. Do you get these at Home Depot? Lowes? What does CFL stand for?

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post #4 of 12 Old 07-01-2013, 07:43 PM
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CFL is a Compact Florescent Lightbulb. I found mine at Walmart but you can find them just about anywhere that sells lights. Just be sure that you get the [6500K] bulbs or your plant won't get anything from them; 6500K is nearest to natural sunlight.

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post #5 of 12 Old 07-01-2013, 07:45 PM
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Thanks Byron. Do you get these at Home Depot? Lowes? What does CFL stand for?
Hardware and home improvement type stores carry them. I get mine at Canadian Tire in Canada as they carry GE and I like these, but Home Depot I believe carries Phillips or Sylvania, Lowe's probably one of them. Just make sure it is the 6500K, there is only one of these from each manufacturer, the rest of their CFL are warmer.

CFL is Compact Fluorescent, the energy-saving screw-in bulbs now replacing the original incandescent bulbs. They are usually spiral shaped.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #6 of 12 Old 07-01-2013, 08:38 PM Thread Starter
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Originally Posted by ZergyMonster View Post
CFL is a Compact Florescent Lightbulb. I found mine at Walmart but you can find them just about anywhere that sells lights. Just be sure that you get the [6500K] bulbs or your plant won't get anything from them; 6500K is nearest to natural sunlight.
Thanks to you both! I just got back from picking the "daylight" 9 watt, at Home Depot, and they only had the highest being 5,000K. So, I guess I'll go to Walmart tomorrow when I take this tank to work, unless 5,000K will work. There are 2 bulbs, so doesn't that equal 10,000K

Gwen

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post #7 of 12 Old 07-02-2013, 12:06 AM
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From what I have read having bulbs with a 5000k - 7500k will work for plant growth but 6500k will work best because it's in the middle of the spectrum.

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post #8 of 12 Old 07-02-2013, 01:27 PM
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Kelvin is the colour temperature of the light, with lower numbers being warm (more red, less blue) and higher numbers being cool (more blue, less red). Plants need red, blue and green light. The 6500K bulbs provide all three. Thus, they work better. They also render colours of fish and plants more exactly.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #9 of 12 Old 07-02-2013, 02:38 PM Thread Starter
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Thanks to you both. I took your advise, found the right 6,500K bulbs at Walmart, and they are in the tank. Now what fish to put it

Hoping to see nice plant growth with these lights.

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post #10 of 12 Old 07-02-2013, 04:52 PM
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Thanks to you both. I took your advise, found the right 6,500K bulbs at Walmart, and they are in the tank. Now what fish to put it

Hoping to see nice plant growth with these lights.
You will. I have very good plant growth in my two smallest tanks with these bulbs, and no algae. I've never figured out why this should be, but it is.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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