could this work? - The Planted Tank Forum
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post #1 of 3 (permalink) Old 08-17-2006, 01:52 PM Thread Starter
Join Date: Aug 2006
Location: england
Posts: 1
could this work?

im very green on both fish and plants, so forgive any "silly" questions. lol age does not mean knowledge!

being from a photographic background, it occurs to me that the use of colour correction filters my offer some help in better growing conditions for plants, without the array of different tubes and bulbs normaly needed. i am aware that these filters will result in a loss of light, how much depends on the correction needed. i am aware that this will not be the "difinitive solution" just an alternitive, that may offer both useful light for plants, and also some amazing effects, with a very low outlay, a 36" square of correction filter costs 1.50, depending on the amount bought.
I have tried this only with a moonlight effect, true i have not looked into the correct colour temp needed for this, using a deep blue/purple filet simply layed on top of the tank and pointion a led white light at an angle to the filter, cloud effect was achived by buffing the upper surface of the filter with wire wool, in rounded patches. the effect is stunning, though how useful is another matter.
i would be glad of your input.
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post #2 of 3 (permalink) Old 08-17-2006, 11:15 PM
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Join Date: Dec 2004
Location: Prior Lake, MN (Twin Cities)
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It could, however filtering out the light wont increase the plants ability to use it. Certain wavelengths are more usable by plants, they just dont use the rest of the light. However if a certain wavelength is needed for algae, and you can filter it out now we are on to something! Of course this statement is only as accurate as I am, and I am guessing, logically of course, but still guessing
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post #3 of 3 (permalink) Old 08-18-2006, 02:44 AM
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A filter can only remove certain portions of the spectrum, not add anything. So, if a bulb is deficient in red light, for example, no filter can make the light from that bulb contain more red light. The non-useful portions of the bulb's spectrum are not likely to be harmful so removing them doesn't really accomplish anything for the plants. You just have to use bulbs that provide a spectrum useful to the plants.

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