Led Light 7500k rated at 100 watts for $20 - The Planted Tank Forum
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post #1 of 17 (permalink) Old 08-02-2008, 10:59 PM Thread Starter
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Question Led Light 7500k rated at 100 watts for $20

Would this light tube work in a planted aquarium? He does not give any CRI rating on the bulbs, but the bulb is rated at 100 watts and is very good for the price. Tell me what you think. Here is the link.

http://cgi.ebay.com/2-pc-AQUARIUM-LE...QQcmdZViewItem
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post #2 of 17 (permalink) Old 08-02-2008, 11:56 PM
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The lumens are really low for a 100w light...
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post #3 of 17 (permalink) Old 08-02-2008, 11:58 PM
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Quote:
Originally Posted by holyghostfire View Post
Would this light tube work in a planted aquarium? He does not give any CRI rating on the bulbs, but the bulb is rated at 100 watts and is very good for the price. Tell me what you think. Here is the link.

http://cgi.ebay.com/2-pc-AQUARIUM-LE...QQcmdZViewItem
It should work if you look up the Solaris unit, this looks like a cheaper scaled down version and they use the Solaris to grow Coral in Sw tanks.And corals have a much higher light requirement than most plants.
Just be weary,my grandma always said "if it seems to good to be true it prolly is". That being said if you can afford it its worth a try your not out a lot and it Will light a tank even it it wont grow plants.
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post #4 of 17 (permalink) Old 08-02-2008, 11:59 PM
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Originally Posted by rpayer View Post
The lumens are really low for a 100w light...
Lumens are always lower with LED lighting.
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post #5 of 17 (permalink) Old 08-03-2008, 02:28 AM
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Originally Posted by vance71975 View Post
Lumens are always lower with LED lighting.
Hence the reason they aren't used much for growing plants I guess...
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post #6 of 17 (permalink) Old 08-03-2008, 02:41 AM
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Hence the reason they aren't used much for growing plants I guess...
No normally the Units are a bit out of the avg FW planted tank keepers budget. For example the 48 inch Solaris LED lighting system is OVER 2000.00. I bought my 48 inch T5 HO unit for 199.00.

I-4 48" 15K Solaris LED Illumination System. Supplied with Control Modular and Mounting Feet.
Solaris-I4-48-15K $2789
But it is Completely programmable including Simulating clouds passing in front of the sun. And moonlight. It is an AWESOME lighting system if you have money to burn!

Control Board/LCD Display

All units include the control board with LCD input module. The LCD display has a step through menu to program the Auto settings. There is also a manual mode to bypass the auto setting to temporarily adjust light output of each of the LED strings. (This feature is to observe the tank under different color variations like 6.5k or actinic blue only). The only way to interface to the control board is through the LCD push button display.

Auto Settings (these may change slightly):

Current Time 8AM
Sunrise Options
Default Settings
Sunrise Start Time 8AM
Sunrise Time Length Blue 30 min
Sunrise Time Length White 30 min
Sunrise Time Length Night Blue Lights 30 min
Sunrise Time Length Night White Lights 30 min

Daylight Options
Daylight % Blues 100%
Daylight % Whites 100%
Daylight % Blue Night Lights 100%
Daylight % White Night Lights 100%

Cloud Cover
% decrease from Daylight Full Brightness 0
Frequency between Clouds
Length of Cloud cover

Sunset Options Default Settings
Sunset Start Time 7:00 PM
Sunset Time Length Blue 90 min
Sunset Time Length White 30 min
Sunset Time Length Blue Night Lights 90 min
Sunset Time Length White Night Lights 30 min

Night Settings
Night Start Time 8:30PM
Length of Night Lights 700 min
Night % Blues 0
Night % Whites 0
Night % Blue Night Lights 10%
Night % White Night Lights 0%
Set for 28 Day Moon Cycle ON



If it will grow Coral, Plants are not an issue.


http://www.solarisled.com/
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post #7 of 17 (permalink) Old 08-03-2008, 03:00 AM
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If it will grow Coral, Plants are not an issue.
Not true.

Otherwise we could use actinic lighting in our FW fixtures.





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post #8 of 17 (permalink) Old 08-03-2008, 03:03 AM
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Not true.

Otherwise we could use actinic lighting in our FW fixtures.
You can, As a matter of fact i know someone who does. the Key is to Limit how long the Atinitc are on. The person i know uses them for a Mid day boost they are on like 2hrs MAX out of the total light Cycle of 10 hours and She swears by it!

Not to mention the Solaris can be Adjusted from 6500k to 20,000k AND can turn the actinic off completely there is very few limits to the choices it offers it is totally programmable!
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post #9 of 17 (permalink) Old 08-03-2008, 03:04 AM
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Not true.

Otherwise we could use actinic lighting in our FW fixtures.
Some actinic bulbs grow plants fine. 'No actinic' is one of the myths on this forum. Usually not optimal, but grow plants? - yeah.
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post #10 of 17 (permalink) Old 08-03-2008, 03:05 AM
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You're right, not all actinic bulbs are "true" actinic, some are combo bulbs and combo spectrums, but a "true" actinic is something else.

I run an actinic in my own fixture, it's for aesthetics, period.





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post #11 of 17 (permalink) Old 08-03-2008, 03:23 AM
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I dont think that the unit you are looking at is going to give you enough light to do much with. Units that use the Cree led's have higher lumens output than the standard leds we are used to seeing. The PFO units have cree higher output led units in them. If you look in ebay under cree led you will see some house hold type bulbs that have a good lumens output and those are the ones that people are going with when lighting an aquarium.
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post #12 of 17 (permalink) Old 08-03-2008, 03:29 AM Thread Starter
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I was planning on doing a low tech setup with African Cichlids with a 150 gallon tank. The setup will consist of two t8 48" lamps one rated at 10,000k and one rated at 5,500K plus two of these eBay LED lamps. This would give me 280 watts for a 150 gallon which is almost 2 watts a gallon. What do you think of this idea?
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post #13 of 17 (permalink) Old 08-03-2008, 03:31 AM
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Quote:
Originally Posted by holyghostfire View Post
I was planning on doing a low tech setup with African Cichlids with a 150 gallon tank. The setup will consist of two t8 48" lamps one rated at 10,000k and one rated at 5,500K plus two of these eBay LED lamps. This would give me 280 watts for a 150 gallon which is almost 2 watts a gallon. What do you think of this idea?
i think it would work out fine.
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post #14 of 17 (permalink) Old 08-03-2008, 07:08 PM Thread Starter
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I noticed someone mentioned that the lumens on the led fixture is low. Will this affect the actually wattage. I know that a t8 bulb equals a t12 in terms of light because the lumens is higher on the t8 even though the watts are less. So is the actually wattage of the led fixture lower than 100 watts or equal to? Thanks again!
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post #15 of 17 (permalink) Old 08-03-2008, 07:18 PM
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A Watt is a Watt is Watt. It is a measure of energy (a joule of energy per second). A T8 produces more lumens from less watts because it is more efficient than a T12 (less restrike etc.). The original point was that LEDs aren't as efficient as some florescent fixtures (less lumens from equal wattage), but can pack more lumens into a smaller space, as the Solaris unit shows.
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