Why is my tank getting brown algae? - Tropical Fish Keeping - Aquarium fish care and resources

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post #1 of 11 Old 09-23-2012, 08:09 AM Thread Starter
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Why is my tank getting brown algae?

My tank has been running over a month now and i have noticed brown algae on all my live plants.I have a Coralife fixture with 10,000 31wt T5 HO and a Colormax 31wt T5 HO bulbs.I run the light from about 7 am in the morning until around 8 pm at night.My canister is a Rena XP1 also.Its on a 36 gallon Bowfront
What do i need to do to get rid of this?I also do water changes every week sometimes 2 times a week.
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post #2 of 11 Old 09-23-2012, 10:07 AM
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Are you using tap water? It could be high in phosphates. In my experience new tanks take a while to find equilibrium. Give it more time. When you do water changes your just doing water and not messing with the substrate right?
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post #3 of 11 Old 09-23-2012, 10:09 AM
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Just re-read that and noticed your running your light for an awful long time. You may want to cut down on your lighting cycle.
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post #4 of 11 Old 09-23-2012, 01:08 PM
+1 - reduce the lighting duration.

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post #5 of 11 Old 09-23-2012, 01:19 PM Thread Starter
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Ok thank you
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post #6 of 11 Old 09-23-2012, 01:19 PM Thread Starter
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How long should I run them?
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post #7 of 11 Old 09-23-2012, 02:18 PM
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If the brown algae is diatoms, this is common in new tanks (during the first 2-3 months). It is easy to remove from plant leaves using your fingers. Most of the algae-eating fish will relish this stuff, though I am not suggesting buying more fish just for this; but if you happen to have otos, bristlenose, farlowella, and such, they will eat this. But it should not reappear once the tank is biologically stable.

Although light has little effect on diatoms, i do agree that you should reduce the duration, or you will have green or red forms of algae and they are much more difficult to deal with. Light duration should balance the nutrients available for the plants, and no more; then the plants use the light and nutrients, and algae is unable to take any advantage. It is difficult to say about duration in new tanks because everything is unsettled biologically and algae will often appear just due to this. I tend to start with a reasonable period, say 8 hours, and monitor plant growth and algae. If green/red algae appears, reduce the duration. You can go as low as six hours.

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The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #8 of 11 Old 09-23-2012, 02:29 PM Thread Starter
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Great...Thank you Bryon.We have all those at the fish store I work at.I really want a Zebra Pleco.But very expensive
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post #9 of 11 Old 09-23-2012, 02:36 PM
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Quote:
Originally Posted by Bluydgrl View Post
Great...Thank you Bryon.We have all those at the fish store I work at.I really want a Zebra Pleco.But very expensive
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The Zebra is not much use on algae, being carnivorous. But a beauty of a fish. I had one many years ago.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #10 of 11 Old 09-23-2012, 02:58 PM Thread Starter
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I'm not a fan of Farlowella's..I did want to purchase a BN.And I hear Amano Shrimp are good Algea eaters also?
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