just a quick question about colour rendering... - The Planted Tank Forum

 
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post #1 of 8 (permalink) Old 03-31-2004, 09:23 PM Thread Starter
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ok is a colour rendering of 82 good for photosynthisis? in plants?
should i be looking out for red or blue output?, ive found some 20w 6500k bulbs, i know the k dont really matter but a colour scale next to the pic shows only blue and green gradient. no reds present according to the graph.. so will the colour rendering be good or swish...

thanks

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post #2 of 8 (permalink) Old 03-31-2004, 09:32 PM
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What brand bulb is it?
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post #3 of 8 (permalink) Old 03-31-2004, 09:46 PM
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Colour rendering has nothing to do with Photosythensis. Colour rendering is simply how acurately the bulb reproduces colour visually.

You want to find bulbs that are high in the blue and red

Here is a good example.. this is Hagens Aqua Glow Bulb. I use these quite a bit.



I also use these bulbs from hagen (Power Glo).

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post #4 of 8 (permalink) Old 03-31-2004, 10:56 PM Thread Starter
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i cant remember the brand, ill edit this message when i find em again. thanks G, by the looks of things the powerglo's are just peaking in the blue and green the same as the bulbs im mentioning. this is very good because all ihave to do is buy some beyonnet fittings and boom im on my way to having even more light power mwuahhaha.

am i right in saying the yellow isnt really needed for growing. the aquaglo's dont go near it so i guess there ok. if you can let me know tho and ill order a pair

55US Gallon Medium Planted | 36x15x24Tall
PH 7.0 - 7.2 GH 11
Ehiem 2232 Thermo
2.7WPG 160W 10,000k 5xNO T8's
Sand+Eco Clay, CSM+B Baby Steps + Pres.Co2
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post #5 of 8 (permalink) Old 03-31-2004, 10:57 PM Thread Starter
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heres the site im getting them from
http://www.gbbulbs.co.uk/acatalog/Da...Spectrum_.html

no brand i dont think until i recive it i wont know. but im sure a pair with my 2x 25W t8's

55US Gallon Medium Planted | 36x15x24Tall
PH 7.0 - 7.2 GH 11
Ehiem 2232 Thermo
2.7WPG 160W 10,000k 5xNO T8's
Sand+Eco Clay, CSM+B Baby Steps + Pres.Co2
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post #6 of 8 (permalink) Old 03-31-2004, 11:06 PM Thread Starter
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some more here....

http://www.bltdirect.co.uk/cat614_1.htm

55US Gallon Medium Planted | 36x15x24Tall
PH 7.0 - 7.2 GH 11
Ehiem 2232 Thermo
2.7WPG 160W 10,000k 5xNO T8's
Sand+Eco Clay, CSM+B Baby Steps + Pres.Co2
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post #7 of 8 (permalink) Old 04-01-2004, 01:31 AM
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I think it would be good for plants. I had a 6500k daylight bulb and it produces a very white colored light.
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post #8 of 8 (permalink) Old 04-01-2004, 04:22 PM Thread Starter
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thanks for that urkevits, thats what ima lookin for

55US Gallon Medium Planted | 36x15x24Tall
PH 7.0 - 7.2 GH 11
Ehiem 2232 Thermo
2.7WPG 160W 10,000k 5xNO T8's
Sand+Eco Clay, CSM+B Baby Steps + Pres.Co2
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