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Old 10-29-2011, 08:53 PM   #31
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I'm having that black algae too. Please help me understand what kind of algae is and how to get rid of it.
Thanks


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Old 10-29-2011, 09:48 PM   #32
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Originally Posted by esworp View Post
I suspect this is a dual species colony, in which BBA sets up from spores, and is then covered over with GSA or a biofilm.
I agree with your suspicion.

But really knowing exactly what's going on is quite difficult. To make a point, let me show all the different faces of what's typically referred to as BBA:



Easy, classic BBA. But what about this?



Clearly a dual colony including GSA, but since there's no fuzz, is the second species really BBA? Black cyano? Something else? Don't really know.



Still some GSA. But the black stuff is quite different than in the previous picture. Rather than 0.5-1mm spots, it's extremely tiny; if you were to look very closely at it, you'd find each individual spot is almost as fine as smoke particles! And it shows no preference for leaf edges, either. Is it a different algae altogether? I've also heard people suggest it's deposits due to iron toxicity, or a viral plant infection.



Resembles BBA in color and only. Otherwise, it more closely resembles BGA. Forms sheets on leaf edges, with no visible particles, fuzz, or texture. At the edges where it's thinnest, it's somewhat see-through; and has just a hint of blue-green tint. This I suspect to be black cyano.
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Old 10-29-2011, 10:24 PM   #33
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I thought BBA was usually fixed by upping the co2. I only get it in my non co2 tanks.
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Old 10-29-2011, 10:27 PM   #34
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I thought BBA was usually fixed by upping the co2. I only get it in my non co2 tanks.
I'll have to indicate otherwise. I run fairly high ppm co2, and experience this algae from time to time.
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Old 10-29-2011, 10:44 PM   #35
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I could throw erythromycin at it if it's black cyno.

Might also explain why my algae crew doesn't like it.
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Old 10-29-2011, 11:18 PM   #36
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I could throw erythromycin at it if it's black cyno.

Might also explain why my algae crew doesn't like it.
You can lose all you nitrifying bacteria doing that. Some of it looks like sediment from high TDS in the water, my tank get the same type of build up on rocks, plant, wood, & substrate. I'm going to buy an RO/DI unit to solve the problem, that's all you can do. Are all these tanks using well or city water with chloramine?
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Old 10-30-2011, 03:20 AM   #37
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Soft city water with chloramine.

On another thread, someone used erythromycin against cyno and didn't recycle his tank.
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Old 10-30-2011, 03:41 AM   #38
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Soft city water with chloramine.

On another thread, someone used erythromycin against cyno and didn't recycle his tank.

+1

i have the same algae issue while using RO water and co2 is high as it can be.

i have heard people had good results using erythromycin
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Old 10-30-2011, 04:22 PM   #39
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If we have some concerns about black cyano, which ive never heard of, does anyone have links to some literature related to this taxonomy that seems to have just sprung up?

Namely, its specific causes.. we seem to have a degree of consesus about water source, light intensity, and co2. However, im wondering what else we have in common.

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Old 10-30-2011, 05:21 PM   #40
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Quote:
Originally Posted by DarkCobra View Post
I agree with your suspicion.

But really knowing exactly what's going on is quite difficult. To make a point, let me show all the different faces of what's typically referred to as BBA:



Easy, classic BBA. But what about this?



Clearly a dual colony including GSA, but since there's no fuzz, is the second species really BBA? Black cyano? Something else? Don't really know.



Still some GSA. But the black stuff is quite different than in the previous picture. Rather than 0.5-1mm spots, it's extremely tiny; if you were to look very closely at it, you'd find each individual spot is almost as fine as smoke particles! And it shows no preference for leaf edges, either. Is it a different algae altogether? I've also heard people suggest it's deposits due to iron toxicity, or a viral plant infection.



Resembles BBA in color and only. Otherwise, it more closely resembles BGA. Forms sheets on leaf edges, with no visible particles, fuzz, or texture. At the edges where it's thinnest, it's somewhat see-through; and has just a hint of blue-green tint. This I suspect to be black cyano.
Mine looks the 2nd pic from the top. They look like random black stains on the older leaves of Echinodorus Quadricostatus which is a large sized carpeting plant. The new leaves are ok though. I had it on the moss too, giving it a dirty darker color so I tossed it out.

Tank: 75 gallon
Ferts: EI
Lights: 3 X 54 watts T5HO's 9.5 hrs a day
CO2: Pressurized drop checker green to lime green
No flow issues at all, I can see the plants gently moving with the flow
Substrate: Red Sea Flora Base 1.5 yrs old. Next week will add a fresh 2 inch layer.
Otos & shrimps dont touch the stuff
Again this algae? attacks the carpeting plants only
The only other algae issues in my tank is a minro green spot algae on glass which I clean every week with a 40% water change.

These things are nasty!
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Old 10-30-2011, 05:30 PM   #41
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OP, dewalltheway, why are you EI dosing a bunch of slow growers? Seems like overkill to me, and likely a source of excessive nutrients for you algae. It looks like a GSA/GDAproblem to me. Have you added MgSo4 to your fert mix? This also seemed to make a difference for me as well. Just trying to toss out some ideas that helped me beat this stuff. I also rarely clean my filter. Hopefully by clean, you mean rinse and not steralize. Hope this helps bro
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Old 10-30-2011, 06:38 PM   #42
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Quote:
Originally Posted by DarkCobra View Post
I agree with your suspicion.



Clearly a dual colony including GSA, but since there's no fuzz, is the second species really BBA? Black cyano? Something else? Don't really know.
Exactly what I am dealing with....The Algae from the Pit of hell!

Quote:
Originally Posted by 150EH View Post
Are all these tanks using well or city water with chloramine?
I use strictly RO/DI water

Quote:
Originally Posted by chad320 View Post
OP, dewalltheway, why are you EI dosing a bunch of slow growers? Seems like overkill to me, and likely a source of excessive nutrients for you algae. It looks like a GSA/GDAproblem to me. Have you added MgSo4 to your fert mix? This also seemed to make a difference for me as well. Just trying to toss out some ideas that helped me beat this stuff. I also rarely clean my filter. Hopefully by clean, you mean rinse and not steralize. Hope this helps bro
I still dose because I have alot of stems of Pogostemon stellatus 'Broad Leaf' and some stems of Ludwigia sp. 'Rubin' and also my Blyxa Aubertii seems to do much better with dosing. I have cut back on how much I dose since I don't have a bunch of fast growing stems in there like I used to.
I do not dose MgSo4. I had been using Equilibrium when I would do my water changes but I am switching over and going to start using GLA Ultimate GH Booster mix. I may look into getting some MgSo4 and see what happens.
Thx for the helpful tips!
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Old 10-31-2011, 01:02 AM   #43
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Yep looks like the same junk in my tank. I'll send some out for micro-analysis before I resort to broad spectrum antibiotics.
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Old 10-31-2011, 08:34 PM   #44
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I for one welcome our algeal overlords.
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Old 11-03-2011, 03:26 PM   #45
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I sure hope you guys can come up with a way to get rid of this stuff.These picture looks just like my tank.I have even clipped infected leaves off ,then on the counter, scrub the leaves with a tooth brush. It will not scrub off, scrape off,and no fish will eat it. This black crud grows and will erode the leaves the edges of the leaves.It was there before adding driftwood to my tank.Please help! I am getting so frustrated with nasty looking plants.
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