Outbreak of Cyanobacteria- help!
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Outbreak of Cyanobacteria- help!

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Outbreak of Cyanobacteria- help!
Old 11-16-2010, 10:36 AM   #1
 
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Outbreak of Cyanobacteria- help!

Will someone help me with an outbreak of cyano I'm experiencing? I'm not sure what I can do other than manually remove it. I'd also like to know what caused it??

Tank specs:

ph 7.8
ammonia 0
nitrIte 0
nitrAte 10
(San Diego's famous "hard as concrete" tap water)

Lighting: 130 watts CFL 6500K over a 100gl, 12 hours on/ 12 hours off (bulbs are replaced every six months) Seachem's Flourish Comprehensive weekly, Seachem's root tabs every two months (under the heavy root feeders)

This tank has been set up for 2+ years and this is the first time I've had this type of problem.
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Old 11-16-2010, 11:00 AM   #2
 
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Is that the link you were looking for on the forum?
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Old 11-16-2010, 11:05 AM   #3
 
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Quote:
Originally Posted by Romad View Post
Is that the link you were looking for on the forum?
No, it wasn't. That was something else I was looking for. It seems I'm looking for alot of things this morning, lol.
So, about this cyano. Have you ever experienced it? I bet you are lucky enough that you've never had to deal with this nasty stuff, am I right?? It's absolutely gross. Of course, this just had to happen in my Discus display tank, and not one of my other tanks that I could easily break down and start over...
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Old 11-16-2010, 11:10 AM   #4
 
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no, i've been lucky so far. i just sent you the thread on cyanobacteria from this forum via. pm.

try googling the keywords of the thread you're looking for. 9 out of 10 times it will bring you back here. as martha would say "it's a good thing"
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Old 11-16-2010, 11:34 AM   #5
 
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Thanks for the article link! After reading it I'm more confused than before. It talks about the causes for this bacteria as being related to dirty water, high nitrate and/or phosphate levels, lack of O2 and/or water movement, poor filtration, etc. This is my Discus tank and the water conditions are stellar.
It also states that cyano has a funky "smell" and this tank of mine smells "fresh". I'm stumped.
Byron, are you awake yet?? Help, help, help. (LOL)
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Old 11-16-2010, 12:27 PM   #6
 
That "fresh" smell is actually stink for many people, i dont think it smells so bad but my friends say it reeks... Its often caused by detritus in ur substrate in my experience, if i keep up with my gravel vacs it goes away. I once had it really bad and i dosed with maracyn for a week and it killed all the cyano. Seeing as how this your discus tank, meds might not be a good idea. Just suck as much of it out as you can find, it comes up like a carpet, and do a thorough gravel vac.
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Old 11-16-2010, 01:12 PM   #7
 
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I recently had an outbreak in my dwarf puffer tank (also with great parameters) and had to tear it down. You won't smell it until you try to scrape it off... then it smells just horrid. I completely scrubbed/scraped everything and made sure that there wasn't any left, then set it up as a quarantine tank instead and thought I was good to go. Now the stuff is back. I can't imagine trying to get it out of a 100 gallon!

I'm going to stalk your thread in hopes of help too, if you don't mind!
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Old 11-16-2010, 01:21 PM   #8
 
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Cyanobacteria is caused by organics in the presence of light.

I never get it in my Amazon tanks, but it regularly appears in my Asian tanks. Some time back I read that it seems to be more frequent in tanks with crypts; I have crypts in the tanks where I see this. I have been meaning to ask this of my colleagues in the Aquatic Gardners Association when I remember.

I also find it comes and goes in stages. A year ago I had it bad in the 70g. Every week I would manually remove as much as I could during the water change, and every week it would reappear within a couple days; it covered the surface on the floating plants. This went on for weeks. Then, suddenly, it disappeared--a weekor two after I started dosing Flourish Comprehensive twice (instead of once) a week, and I reduced the light by one hour. Don't know if either had something to do with it disappearing, but it did. This tank has the brightest light, two 40w T8 tubes, and this plus the Flourish only once a week may have been out of balance.

More recently, it appeared in the (new) 70g. Not as bad, but it was there. Then, after maybe 4-5 weeks, no more. There are crypts in this tank. And I again went to twice weekly with Flourish. It is probably a blance issue in part.

I posted a link to an article on cyanobacteria a few weeks back for someone, maybe that was the link Romad sent.

Byron.
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Old 11-16-2010, 05:29 PM   #9
 
if you keep anarchris, its supposed to inhibit cyano growth. just a quick tip.
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Old 11-17-2010, 02:57 AM   #10
 
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Quote:
Originally Posted by aunt kymmie View Post
Will someone help me with an outbreak of cyano I'm experiencing? I'm not sure what I can do other than manually remove it. I'd also like to know what caused it??

Tank specs:

ph 7.8
ammonia 0
nitrIte 0
nitrAte 10
(San Diego's famous "hard as concrete" tap water)

Lighting: 130 watts CFL 6500K over a 100gl, 12 hours on/ 12 hours off (bulbs are replaced every six months) Seachem's Flourish Comprehensive weekly, Seachem's root tabs every two months (under the heavy root feeders)

This tank has been set up for 2+ years and this is the first time I've had this type of problem.
Kymmie,
Were this my tank, I would consider a good pruning of existing plant's to encourage new growth. I say this due to the belief that as plant's grow to maturity the growth may slow, and heavy plant mass could also inhibit new growth by blocking light and discouraging new growth at the substrate as well as further up the plant.
Where plant's are thriving,growing, they can utilize the available nutrient's,light ,(if unobstructed) and available CO2 and Algae which I believe Cyno is a form of,,struggles.Therefore it makes sense to me that continued growth of plant's will help inhibit the growth of various froms of algae.
As plant mass get's larger, and little or no more growth is seen or slows,,flow or circulation around the plant's ,as well as the base of plant's ,could become obstructed. Then, it is possible that oxygen levels at the substrtate could be lower due to organics,detritus ,that settle around the base of large plant mass where it is difficult to remove.
Where plant's are thriving ,most forms of algae stuggle as I understand it.
On the flip side,, If lighting is there,along with nutrients,and even low levels of CO2 such as that produced by organic break down, and by fish,, but plant mass is small or few,,then various forms of algae will find condition's to their liking.(might reduce photo period )
Hence,were it me... I would perform a significant pruning of existing plant's to encourage new growth,or in the event pant's were few,,add more and after large pruning,, planting,, perform large water change.
Have heard of antibiotic Erythromycin used to erradicate the Cyno but as I understand it also compromises the biological filter. I might be willing to try this as last resort .

(Disclaimer).. All of the above is merely my opinion and I am no authority on plants. (not by a long shot), Just offering things that I might consider with my tanks,my plant's.

Last edited by 1077; 11-17-2010 at 03:01 AM..
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