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Brown Algae

This is a discussion on Brown Algae within the Beginner Freshwater Aquarium forums, part of the Freshwater Fish and Aquariums category; --> Here are some pics Byron and bordom....

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Old 02-12-2013, 08:49 PM   #11
 
Here are some pics Byron and bordom.
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Old 02-12-2013, 09:24 PM   #12
 
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O.O
Have you tried wiping that off? Does it come off and this is JUST on the plants right?
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Old 02-12-2013, 09:27 PM   #13
 
Yep. I tried rubbing/scrubbing it off and some comes off, but there is alot more...
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Old 02-12-2013, 10:09 PM   #14
 
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Ok well that doesn't look like diatoms to me but it could be?? Honestly I am going to sit back and wait for Byron to answer this one. I have my thoughts and ideas but am no expert and don't wanna steer ya wrong.
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Old 02-13-2013, 10:32 AM   #15
 
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I don't see that as diatoms either. This is a form of algae, I currently have this in my 90g; it is reddish-brown in my case. But it spreads and covers plant leaves. I also had it (or something similar) on areas of the end wall glass near the top (brighter light).

In my case I believe it arrived because of too much fertilization. Over the past year, I have been experimenting with one, two and three doses of Flourish per week. In this tank only this algae suddenly appeared, and I have cut back to once a week. The light has been the same throughout in my case.

There shouldn't be a light issue in your 10g with two 10w CFL bulbs (assuming they are 6500K, that can make a difference). How long is the light on daily?

You previously mention using no fertilizer. Are the plants growing well? A photo of the entire tank might help here. Nitrates were given as 10ppm which is not too high, but higher than I would expect in a planted tank that receives no fertilization. There must be sufficient (or perhaps excess) nutrients naturally. What is the fish load, and how often are they fed? How often are water changes and what volume?

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Old 02-14-2013, 11:27 AM   #16
 
I have a moderate fish load with 4 Dwarf Gouramis in it. The crypts are still growing well, but the wisteria and sword is having trouble since the algae. i don't have a fertilizer right now, but i might look into it.
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Old 02-14-2013, 11:28 AM   #17
 
the lgith is on from 6 AM to 10 PM, i know that might be a little long lol
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Old 02-14-2013, 11:50 AM   #18
 
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Quote:
Originally Posted by Tetrabetta12 View Post
the lgith is on from 6 AM to 10 PM, i know that might be a little long lol
This is your main problem. This is far too long. And that is because there cannot be sufficient nutrients to balance the light for that long a photoperiod.

To explain. Plants need 17 nutrients and sufficient light intensity in order to photosynthesize (grow). As soon as some nutrient is no longer available, photosynthesis slows and may even stop altogether. As soon as that point is reached, an y continuing light, along with any remaining nutrients, are available for algae to use, and it will. The plants can only out-compete algae if everything they need is available.

I would first reduce the light period down to 10 hours. Using a timer is good, as it also provides for a regular day/night which helps the plants (and fish). The period can be any time, obviously when you are more usually home to enjoy the tank, so the light can come on at say 11 am and go off at 9 pm if you are home mainly in the evenings.

Second I would get a comprehensive liquid fertilizer and dose once a week. This will ensure the plants are getting everything. Flourish Comprehensive Supplement is the one I use, another is Brightwell Aquatics' FlorinMulti. For a 10g tank, you would only use about 1/4 of a teaspoon once a week, dosed on the day following the water change.

One essential nutrient is carbon, as CO2. This we do not add, but rely on the natural CO2 to provide carbon. This is usually the first nutrient to run out, so it takes some experimenting to get the balance.

You may need to reduce the light further, but start at 10 hours and see how the plants respond and what algae does. What is there will not go away; the aim is to prevent it from increasing, and to do that you have to find the balance.

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