Blue light used for algae control?
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Old 05-01-2013, 06:28 PM   #1
Aplomado
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Blue light used for algae control?


I've got an infestation of Spirogyra and Oedogonium.

I read somewhere on the net a reference to covering the glass under the light with blue plastic... supposedly by reducing the red wavelengths, the algae won't grow as well as the plants. Or maybe, it just dims the light???

Contradicting this, I've also read that blue light encourages alage.... so maybe it would be counterproductive?

I've got some blue plastic sheets.

Is this a good or bad idea???

Last edited by Aplomado; 05-01-2013 at 07:33 PM.. Reason: added info
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Old 05-01-2013, 07:12 PM   #2
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it seems like many people are getting Spirogyra lately, i guess Spirogyra spores during the spring are entering in our tanks somehow.
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Old 05-01-2013, 10:59 PM   #3
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Yep, seems its going around. We've had windows open in the house, but its only hit two tanks. We have 4 open-top tanks in the same room.

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Old 05-02-2013, 02:47 AM   #4
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here's my Thread
http://www.plantedtank.net/forums/sh...d.php?t=320258

i am using API Algaefix and hopefully it works without killing my Tonnina and Erio sp.
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Old 05-02-2013, 03:06 AM   #5
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This thread from 2009 might help you guys who are getting this horrible algae !

http://www.plantedtank.net/forums/sh...ad.php?t=82226
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Old 05-02-2013, 03:33 AM   #6
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Quote:
Originally Posted by stevenjohn21 View Post
This thread from 2009 might help you guys who are getting this horrible algae !

http://www.plantedtank.net/forums/sh...ad.php?t=82226

Excel and black out, this option can kill many plants, i stop using it after having this bad experience.
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Old 05-02-2013, 04:00 AM   #7
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Blackout i never had an issue with plants recovering. Even UG which is pretty sensitive came out fine. + the Excel, well im not sure.
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Old 05-02-2013, 11:03 AM   #8
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Blackout i never had an issue with plants recovering. Even UG which is pretty sensitive came out fine. + the Excel, well im not sure.

i think this method doesn't kill this kind of algae, it might help to kill other kind of algae but not this one. anyway after a one day dose of API algaefix i can already see the algae becoming loose and turning grayish.
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Old 05-02-2013, 11:48 AM   #9
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I went to Algaefix route too. Started dose at 1/2 recommended and by day 3 went up to full dose. It was gone a day later and I did a large water change. I will be doing the full dose on the other tank that has it too.
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