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Discussion Starter #1
After all the water changes, pruning, adding new plants, changing the lighting schedule...I'm no closer to getting a handle on the cyanobacteria outbreak I'm experiencing. After rolling around treating the tank with Maracyn I have decided to use the black out method instead.
I'm a little worried about where I read the massive die off of cyano can have an negative affect on my fish. As this is my Discus display tank I want to be very careful. Do I perform a major water change prior to blacking out the tank, keep the tank in total darkness for four days, unwrap after four days and do another large water change?

I re-read the prior thread regarding this and if I'm reading it right, four days should do the trick?

http://www.tropicalfishkeeping.com/aquarium-plants/outbreak-cyanobacteria-help-55601/page2/
 

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Have you tried carbon?

With the total blackout, you need to remove as much of it manually as possible. Personally, I'd do a water change in the middle of the dark to be safe. (Or just test the water).

Be careful scraping it- I scraped off some BGA, and THAT's what killed my green terrors- allellochemicals....
 

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Discussion Starter #3
Have you tried carbon?

With the total blackout, you need to remove as much of it manually as possible. Personally, I'd do a water change in the middle of the dark to be safe. (Or just test the water).

Be careful scraping it- I scraped off some BGA, and THAT's what killed my green terrors- allellochemicals....
Please tell me how carbon will kill the cyano? By removing all the excess organics the cyano is feeding from??
 

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I've done a total blackout before with success. here's a link with somepictures http://www.tropicalfishkeeping.com/freshwater-aquarium/starting-my-blackout-gonna-miss-my-36742/

http://www.tropicalfishkeeping.com/freshwater-fish-pictures-videos/pictures-my-tank-after-72-hours-37090/


I trimmed as much out as i could. Then did a 50% WC. Then blacked it out. After it was all done i couldn't see trace one of any cyano. The hardest part was not peeking.

I did not have any really sensitive fish in my tank at the time of blackout. I feel that's at least worth pointing out
 

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I have never done a blackout, but even with maracyn treatment, there is a period where the cyano just dies in mass and pollutes your water so i would recommend a water change for both methods in case you change your mind later and use maracyn.
 

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I've had a couple algae outbreaks (green water was the worst), and all I had to do was run carbon in the tank until it was gone...

Pretty sure it removes all the nutrients, iron, and DOC from the water. My plants also suffered, unfortunately...

Tanks been green-water free for over a month now.. Might be worth a try.
 

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Discussion Starter #8
The more I read the more I don't know what to do. Maracyn is out, as it'll kill my bio-bed. The black out, while it may kill the cyano, doesn't get to the root cause of why it was there in the first place (excessive organics?) and I'm told it'll just come back if I don't get to the source.

I had pulled out a bunch of anacharis when I had fully pruned the tank back two weeks ago. I had placed all the anacharis in a bucket out on the patio with the idea to get to it and see if I couldn't salvage some of it. After sitting in that bucket on the patio for two weeks (I had forgotten all about it) it was algae free. Causation, correlation, coincidence or none of those?? Now I'm thinking UV sterilizer...
 

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the blackout won't completely solve your problem, but in my case it killed out the cyano in my tank. After the blackout i had to dial down my lights, start adding ferts and add co2 to get everything in balance. It's all about the balance as you well know. For me it was easier (and more sightly) to get rid of the stuff, and then work to figure out what was out of whack. Thats just my thoughts on the issue, but i'm just an amateur. I'm sure whatever you decide to do will be the right thing. :)
 

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Discussion Starter #10
the blackout won't completely solve your problem, but in my case it killed out the cyano in my tank. After the blackout i had to dial down my lights, start adding ferts and add co2 to get everything in balance. It's all about the balance as you well know. For me it was easier (and more sightly) to get rid of the stuff, and then work to figure out what was out of whack. Thats just my thoughts on the issue, but i'm just an amateur. I'm sure whatever you decide to do will be the right thing. :)

:cry: I just want to go back to the way it was! Two years and all of a sudden?? I don't get it. Something, obviously, has changed, but I don't know what. I do not want to have to go the CO2 route, that I do know. Still trying to figure out how everything got so out of balance here... *sniffs*

An amateur? You got rid of cyano, are running CO2 and have an algae free tank. Amateurs can't to that!!
 

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:cry: I just want to go back to the way it was! Two years and all of a sudden?? I don't get it. Something, obviously, has changed, but I don't know what. I do not want to have to go the CO2 route, that I do know. Still trying to figure out how everything got so out of balance here... *sniffs*

An amateur? You got rid of cyano, are running CO2 and have an algae free tank. Amateurs can't to that!!

I wouldn't say algae free..lol..but minimal algae. I get some green spot that i keep wiped off every water change. If i miss a few weeks i notice a little green spots, which i wipe off.

Just a question: do you have any cabomba or from that family in your tank?
It seems like that was where i noticed the cyano first when i had it in my tank.
 

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i wish there was something that ate this stuff, its gotta occur naturally in nature, how does mother earth get rid of it? I want algae in my tank, like the good stuff, diatoms, green algae, even fuzz algae i want. But i just get BGA all the time and im really confused as to why this one appears of all the possible algae in my tank.

Aunt Kymmie, are you getting any other type of algae in excess too? or is it just the BGA? If its just BGA, then maybe theres a unique trait to BGA that allow it to thrive where other algaes cannot?
 

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Discussion Starter #13
I wouldn't say algae free..lol..but minimal algae. I get some green spot that i keep wiped off every water change. If i miss a few weeks i notice a little green spots, which i wipe off.

Just a question: do you have any cabomba or from that family in your tank?
It seems like that was where i noticed the cyano first when i had it in my tank.
No, not in this tank. In this tank I have a variety of Anubias, Crypts (Byron had mentioned the relationship of Crypts and cyano in that other thread), Ludwigia, Red and Green Tiger Lotus, Pennywort, Hygrophilia angustifolia, Hygrophilia corymbosa. I don't think any of those are "related" to Cabomba??

So, what do you think of my idea of getting a UV Sterilizer?? It wouldn't hurt, would it??
 

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i wish there was something that ate this stuff, its gotta occur naturally in nature, how does mother earth get rid of it? I want algae in my tank, like the good stuff, diatoms, green algae, even fuzz algae i want. But i just get BGA all the time and im really confused as to why this one appears of all the possible algae in my tank.

Aunt Kymmie, are you getting any other type of algae in excess too? or is it just the BGA? If its just BGA, then maybe theres a unique trait to BGA that allow it to thrive where other algaes cannot?
There is actually another algae that has started and I'm told it's an algae that feeds off of cyano which would explain why it's now in my tank. I don't know what it's called but it looks like black soot. It appears next to the areas where the cyano is. Doesn't my tank just sound lovely?? :evil:
 

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Interesting, thats the stuff i find UNDER my BGA when i suction it off my stuff, it also comes up quite easily with the bga. I know that some plants secrete alleochemicals against BGA such as Anachris and hornwort, but adding anachris to my tank just added another surface for my bga.

I keep a bunch of small crypts in my tank also, perhaps theres research on the relationship of crypts to cyano?

My cyano does not grow on or near my crypts though, its mostly on my swords and watersprite..
 

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Interesting, thats the stuff i find UNDER my BGA when i suction it off my stuff, it also comes up quite easily with the bga. I know that some plants secrete alleochemicals against BGA such as Anachris and hornwort, but adding anachris to my tank just added another surface for my bga.

I keep a bunch of small crypts in my tank also, perhaps theres research on the relationship of crypts to cyano?

My cyano does not grow on or near my crypts though, its mostly on my swords and watersprite..
My crypts are the most vulnerable, in my tank it seems.
Right now I'm seeing more of this "stuff", than I am the cyano. I wish I knew what the heck to do. I can see why people throw their hands up and hit the tank with algaecides.
 

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There is actually another algae that has started and I'm told it's an algae that feeds off of cyano which would explain why it's now in my tank. I don't know what it's called but it looks like black soot. It appears next to the areas where the cyano is. Doesn't my tank just sound lovely?? :evil:

My wonderful and wise mama always says "be careful what you wish for." What you have, sounds exactly like what i had. It's slimey, i coats on the glass and substrate. You can wipe it off with your fingers, and it reeks..:cry: I used my net to "scoop" it out of the plants. The problem is that it kinda flies everywhere. I know you won't like seeing all the stuff floating around in your tank.

Do you have a tank you can house your Discus for a few days? If you do and if it were my tank: I would house them elsewhere, do the blackout and have your tank back. Your plants will be fine, and will welcome a few days of darkness, it'll be like a solar eclipse in nature.

I put off and put off and cleaned it up and cleaned it up...until i did the blackout. I'm not saying it won't come back, but at least it'll stop spreading and buy you time to see how balanced your tank is.IMO

about your uv sterilizer idea; i don't see many people that have been using them on freshwater. It kinda seems like overkill, with the plants. But with the algae issues...i'm curious. That being said: IMO as long as it doesn't kill the beneficial bacteria it would be fine. You have got me interested on the idea, and i'm doing a little research on the process.
 

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My wonderful and wise mama always says "be careful what you wish for." What you have, sounds exactly like what i had. It's slimey, i coats on the glass and substrate. You can wipe it off with your fingers, and it reeks..:cry: I used my net to "scoop" it out of the plants. The problem is that it kinda flies everywhere. I know you won't like seeing all the stuff floating around in your tank.

Do you have a tank you can house your Discus for a few days? If you do and if it were my tank: I would house them elsewhere, do the blackout and have your tank back. Your plants will be fine, and will welcome a few days of darkness, it'll be like a solar eclipse in nature.

I put off and put off and cleaned it up and cleaned it up...until i did the blackout. I'm not saying it won't come back, but at least it'll stop spreading and buy you time to see how balanced your tank is.IMO

about your uv sterilizer idea; i don't see many people that have been using them on freshwater. It kinda seems like overkill, with the plants. But with the algae issues...i'm curious. That being said: IMO as long as it doesn't kill the beneficial bacteria it would be fine. You have got me interested on the idea, and i'm doing a little research on the process.
I think your mama and my mama went to the same school! lol
I do not have another place I can "tank" my Discus but I know they can handle a black out and go without food, no problem. Knock wood, they are a healthy bunch.
I think the thing that is the most frustrating, BEYOND the most frustrating, is that all my tanks are planted, maintained and feed the same, lighting schedules, etc., everything is the same! Why the heck am I having problems with this one!! Why couldn't it have been one of the littler ones?? Waaa Waaa Waaa. Ok, I'll stop crying now.
 
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