Budding Problem with Blue Green Algae (Cyanobacteria)
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Budding Problem with Blue Green Algae (Cyanobacteria)

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Budding Problem with Blue Green Algae (Cyanobacteria)
Old 04-02-2012, 08:51 PM   #1
 
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Budding Problem with Blue Green Algae (Cyanobacteria)

So I think I have a budding cyanobacteria problem in my 10 gal divided betta splendens tank, and I'm getting mixed reviews of how to treat it. I want to stop this early before I have a blue-green tank. The tank has been running about 3 months now, is fully cycled, and only has duckweed, one anubias (recently added, tied to driftwood), and some java fern that is doing poorly (I'm trying to revive it as it was the only one at the store at the time). It's cycled, heated, and has a home-made bubble filter. The light is not exactly what I want: I have a crappy hood that uses two screw-in light bulbs (wish I could remember the wattage and kelvins on them). In order to upgrade it would be a total of around $80; I can do this as soon as I get a summer job. The parameters are: pH 7, ammonia 0ppm, nitrite 0 ppm, nitrate 0ppm, GH 3, and KH 3. I'm not dosing with any ferts. I want to have more plants and a better light in there before I start. What is my best option for beating back this algae bug before it becomes an algae monster?
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Old 04-02-2012, 09:13 PM   #2
 
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Here's a couple of thoughts before you get to far into this.

- are you sure it's cynobacteria? I'd like a pic to be sure before treating.

- You may want to look into dome light fixtures. I had two with 12w CFLs on my 10 gallon and it worked great. It cost about $30 total for both and the bulbs at Lowes

-it sounds like you have to much light for your tank or you have the lights on too long during the day. 8hrs of light is more than enough for the plants you listed.
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Old 04-02-2012, 09:53 PM   #3
 
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I forgot to mention that the light is on for 8 hours. I've already cut the timer back down to 7. Here are some pictures:
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Old 04-03-2012, 01:15 PM   #4
 
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I'm not sure that is cynobacteria, looks more like thread algae to me. I would do a good gravel vacuuming and cut down the light to 4 hours a day for a week or two.
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Old 04-03-2012, 01:31 PM   #5
 
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I agree that it does not look like Cyno.

If that's the standard 10 gallon hood with two screw in bulbs, you can buy two 10W 6500K spiral CLFs and it will work fine (a two pack is about $10). I believe 10W is the smallest you'll find. It's definatly 'moderate' light levels but with a cover of floating plants, the tank itself should be fine.
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Old 04-03-2012, 02:31 PM   #6
 
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The light duration has gone down to 4 hours a day. I'll continue this until I see this green stuff dying back.

A gravel vac is part of my weekly WC routine, and I am rather thorough about it. I just performed one on Sunday.

It is one of those dual-light fixtures. I hate it. It makes accessing my divided tank very difficult. I'll be upgrading to a single-tube T8 hood and fixtures when a summer job comes around.

Now for the specs on my bulbs: right side (where most of the algae is) 120V 10w no kelvin temp given. Left side: 5100k 10w 120v and it's made by Eclipse.
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Old 04-03-2012, 04:40 PM   #7
 
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I concur with what's been suggested. I do see cyano on the tank walls, but the other is algae. More plants and the suggested light will help.
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Old 04-21-2012, 11:30 PM   #8
 
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So I think I discovered part of the problem. Light from my window was hitting the tank in the early morning hours (before I get up). That has kinda slowed the problem. At least on the glass. Now I'm seeing the green stringy algae growing on the surface. I just have a bubble filter in there which used to provide better water movement than it does now. I've also noticed a green-blue algae on some of the plants and decor. It forms a kind of tent on the plants and scraps right off the rocks when I move it.

My lights are still on for about 4 hours a day and I have added a few more strands of anarcharis, but the tent algae is covering even the newer plants. My options for plants locally is very limited and that is why I'm trying to take plants from my other established aquariums.
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