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Old 11-16-2010, 08:32 PM   #1
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Question algae is growing out of control!!!

I recently installed new lights on my tank and the algae is growing out of control!!! I don't know what to do! It is literally growing on top of the water. I purchased these brighter lights so I could get an anenome for my clowns. Now my tank is unsightly. What can I do other than leaving my fish in the dark 20 hrs out of the day? PLEASE HELP!!

My tank:
55 gal tank
75 lbs live rock
2 percula clown
1 royal gramma
1 yellow cubicus boxfish
(4) T5 high outputs =(2) are 12,000k daylight and other (2) are actinic
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Old 11-16-2010, 08:35 PM   #2
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New lights will cause algae growth if your not keeping your water parameters tight. Think of it as an indicator that you have some water quality issues and you need to fix them before you get your nem. Chances are you have high nitrates, high phosphates, or both. What are your test kit readings?
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Old 11-16-2010, 08:36 PM   #3
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What lights did you have before?
How long ago did you switch them?
What is your filtration system?
How old is the system?

Algae growing on top of the water...no powerhead/jets moving the surface?
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Old 11-16-2010, 08:37 PM   #4
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I agree with Krypt, but need to point out that clowns don't need nems and most nems die way prematurely in aquaria. They'll host a bunch of different stuff.
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Old 11-16-2010, 08:46 PM   #5
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Floyd...to answer your questions:
1) I had just regular (2) 17 watt T8's
2) Switched about a month ago
3) Canaster Filter, protein skimmer
4) My tank is 2 yrs old
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Old 11-16-2010, 08:47 PM   #6
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Krypt, I tested the water about a week ago and the nitrate levels were high. I did a water change and the algae keeps getting worse
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Old 11-16-2010, 08:49 PM   #7
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Floyd...just noticed your last questions about the powerheads. We do have 1 powerhead running on top and 3 on the bottom
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Old 11-16-2010, 09:22 PM   #8
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Cut your duration of your lights to half. Then increase it by 1 hour every other day. This will help you get your algae under control. Switch your feeding to everyother day and only feed half of what you would normally feed. This will cut down on your nitrates and PO3, Don't worry the fish and corals can handle this for the duration. Do not feed any frozen foods until your algae is under control.
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Old 11-16-2010, 11:58 PM   #9
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Quote:
Originally Posted by AlyG View Post
Krypt, I tested the water about a week ago and the nitrate levels were high. I did a water change and the algae keeps getting worse
That's the root of the issue right there. Nitrates are food for algae, the higher the amount, the more of a bloom. Thincats advice is spot on, I'd also recommend doing some more water changes to further reduce your levels. Try to get it down as close to 0 as you can.
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Old 11-17-2010, 10:36 AM   #10
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ok thanks guys! I will try that! Is there any kind of fish that I could get to help eat the algae? I was looking into getting a lawnmower blenny, would that work?
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