Need some clarification on lighting - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 12 Old 11-30-2011, 09:32 PM Thread Starter
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Need some clarification on lighting

I have a 10 gallon tank with live plants, however I have never actually payed much attention to the lighting.

The lights I have are the ones that came with the tank, two 15 watt (I believe) incandescent lights. My plants have been growing well and I've had them all for nearly a year. I have Bacopa, hygro and crypt. Don't ask me for the full names cause I have no idea, lol.

Today I went to the store and picked up a Amazon Sword plant and the guy told me they need a lot of light... Can someone please tell me if the lights I have are sufficient or if I should change them? Any recommendations on different lights?
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post #2 of 12 Old 11-30-2011, 10:51 PM
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Swords don't need a lot of light. I however would change the bulbs you have in your hood. The best kind to get would be 2 10w CFL bulbs. GE makes some that are classified as "daylight" bulbs that will work. You need some that are around 6500k. This bulbs can be produced at most hardware stores.
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post #3 of 12 Old 11-30-2011, 10:52 PM
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Well some swords do so to clarify Amazon swords do not need a lot of light.
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post #4 of 12 Old 11-30-2011, 10:54 PM Thread Starter
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Okay great, thanks. I will look for those bulbs tomorrow.

Also, some of the leaves of the swords are at the water surface level but still submerged. I was looking for a tall plant to provide some surface cover for female bettas. Can too much light damage the leaves?
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post #5 of 12 Old 11-30-2011, 11:02 PM
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I dont think so but being closer to the light they might develop some algae on them. If the algae gets out of control that can hurt the leaf. Also might wanna wait till someone else responds as I am not totally sure on the wattage ppl run in those hoods. I am think 10w but it might be something like 13w instead.
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post #6 of 12 Old 12-01-2011, 12:39 PM
It can be either wattage though generally if you are just starting out less is better. Floating leaves should not develop excess algae growth. If light is in excess plants often change the compisition of their chlorophyll. Normally they get a redish tinge. The result is less efficient photosynthesis by those leaves.
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post #7 of 12 Old 12-01-2011, 12:46 PM
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I'm in agreement with what's been posted by others. I use the GE "daylight" 10w compact fluorescent bulbs on my 10g (2 bulbs) and it is perfect. With your stem plants though i would go with the 13w bulbs. Probably 8-10 hours per day should do it. N utrients must be in balance to avoid the algae.

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 #8 of 12 Old 12-01-2011, 04:38 PM Thread Starter
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I went to Wal-mart today and could not find the bulbs you guys are talking about.

Could only find 25-40 watt bulbs in the lighting section. I'll keep looking..
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post #9 of 12 Old 12-01-2011, 05:11 PM
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There may be two watt numbers on the package. Watt equivalent, which would be higher and is a measure of light output as compared to an incandescent bulb of that wattage. The other number would be actual watts used, which is what you need in the 10-13 range. For example a 14 watt CFL will be about 60 watt equivalent.
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post #10 of 12 Old 12-01-2011, 05:25 PM
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Quote:
Originally Posted by Quantum View Post
There may be two watt numbers on the package. Watt equivalent, which would be higher and is a measure of light output as compared to an incandescent bulb of that wattage. The other number would be actual watts used, which is what you need in the 10-13 range. For example a 14 watt CFL will be about 60 watt equivalent.
As Quantum has said they will say to different Watts on the package. Also just to make sure everyone is on the same page the CFL bulbs are the spiral ones or the energy saver bulbs. I know the walmart near me carries them.
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