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Old 05-20-2018, 11:50 PM   #1
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I got a new light on my 100gallon that is causing increased algae

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ID:	309009plz help ever since I got a new light on my 100gallon it really has increased the algae growth! I have never had this problem.
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Old 05-21-2018, 07:11 PM   #2
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Algae is fed by a couple of things: Food and light. Food is in the form of nitrates and phosphates. Check that to make sure you have a low to no count. The light issue comes down to spectrum. Different algaes will grow better under different light spectrums and light hours. Bright white lights usually produce a green algae. Blue spectrum produces reds, browns and black algaes. The right spectrum and hours of light, in the presence of low to no nitrates or phosphates produces no ( or very little) algae. If your light is an LED light, you may need to fiddle with the light spectrums produced to clear out the algae. If your lights aren't LEDs, try reducing the amount of hours the lights are on if the algae is green or increasing the light hours if the algae is a darker color. One of those 3 things should solve your issue.
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Old 05-22-2018, 01:18 PM   #3
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Quote:
Originally Posted by Andy Sager View Post
Algae is fed by a couple of things: Food and light. Food is in the form of nitrates and phosphates. Check that to make sure you have a low to no count. The light issue comes down to spectrum. Different algaes will grow better under different light spectrums and light hours. Bright white lights usually produce a green algae. Blue spectrum produces reds, browns and black algaes. The right spectrum and hours of light, in the presence of low to no nitrates or phosphates produces no ( or very little) algae. If your light is an LED light, you may need to fiddle with the light spectrums produced to clear out the algae. If your lights aren't LEDs, try reducing the amount of hours the lights are on if the algae is green or increasing the light hours if the algae is a darker color. One of those 3 things should solve your issue.


Thank you for your advice!
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Old 05-23-2018, 08:32 AM   #4
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That is Cyanobacteria. It is just like algae, but can only thrive in low flow areas of our systems.
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Old 05-24-2018, 01:12 PM   #5
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Yes one of my blower heads just went out recently!
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Old 05-25-2018, 10:25 AM   #6
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I would definitely replace the blower head.
Here is an article about Cyano and Light that might help as well:
https://onlinelibrary.wiley.com/doi/...8.2001.02569.x
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Old 06-19-2018, 12:26 PM   #7
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You can also change the temperature, sometimes thatís the cause, or turn down the light if possible
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