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Rio Atabapo

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76
65D68574-C33F-43BB-9531-6ECA31CD87EB.jpeg
Here’s the tank btw, it’s a 20 gallon long.The pH is 5.5
 

MacZ

Well-Known Member
Messages
3,193
Location
Germany
but I’m not sure if them or the dicrossus would be more interesting. What do you guys think?
*looks at his own tank*
*looks at his own avatar*

I think you might be able to guess my answer. :D

Just a question, because I think it's due to the lighting in the picture: There's only biofilm on the twigs, not cyanobacteria, yes?

They do just fine with my tap water.
You emphasise that in the few posts you've written until now - Care to share your water parameters? Because it's always a difference if one's talking about simple holding conditions or biotope/breeding tank conditions.
The term biotope is often used here on the board to denote making the effort of recrearing softwater habitat conditions.
 
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76
The pH is about 5.5, and I believe it’s just algae and biofilm. I’ve never really dealt with cyanobacteria or any kind of algae so I’m not completely sure.
 

MacZ

Well-Known Member
Messages
3,193
Location
Germany
The pH is about 5.5, and I believe it’s just algae and biofilm. I’ve never really dealt with cyanobacteria or any kind of algae so I’m not completely sure.
The question about the water parameters was for @fanning88 , not directed at you.

Ok, so it's just biofilm in a greenish light. Just wanted to make sure.
 

Aquaticloch

Active Member
Messages
157
Location
Canada eh
Yeah, unfortunately thats cyanobacteria. I've just finished a fight with it lasting a while. It's stubbornly resilient and shockingly fast-growing.
 

Bramgroet

Member
Messages
182
If you don’t have plants in the tank you can put the light out for a long time I don’t now how long. Someone else will probably know how long.
 

MacZ

Well-Known Member
Messages
3,193
Location
Germany
There is no general course of action. Blackouts and more competition from plants have helped me. But I had a fraction of the amounts you have there.

Ok, first things first:
Full water parameters? (GH, KH, NH3, pH)
Composition of your sourcewater?
Maintenance schedule?
Light schedule?
Position in the room relative to the window?
 
Last edited:

dw1305

Well-Known Member
5 Year Member
Messages
2,791
Location
Wiltshire UK
Hi all,
Yeah, unfortunately thats cyanobacteria.
I don't think it is cyanobacteria (in fact I'm pretty sure it isn't), it is the wrong colour but both colour and filaments look much more like a <"Green Algae (Chlorobionta)">.

It is only really green algae that are "grass green", because only they, and all the higher plants, possess chlorophylls a and b.

blue-green-algae-3-768x507.jpg


Basically it would be a darker blue green and a lot more slimy if it was cyanobacteria. Image from <"https://aquariumscience.org/index.php/16-4-blue-green-algae/">

You could also try <"sniffing a bit">.

cheers Darrel
 

anewbie

Well-Known Member
Messages
1,479
Hi all,

I don't think it is cyanobacteria (in fact I'm pretty sure it isn't), it is the wrong colour but both colour and filaments look much more like a <"Green Algae (Chlorobionta)">.

It is only really green algae that are "grass green", because only they, and all the higher plants, possess chlorophylls a and b.

blue-green-algae-3-768x507.jpg


Basically it would be a darker blue green and a lot more slimy if it was cyanobacteria. Image from <"https://aquariumscience.org/index.php/16-4-blue-green-algae/">

You could also try <"sniffing a bit">.

cheers Darrel
I basically agree - but it is a bad kind of green algae - no clue if it is bad health wise for fishes but it grows when things are way out of whack. This is of course a non-scientific observation that i get that sort of algae when i goof and something is dying - like when i cut all the roots off my frogbit and it goes south ;) removing the offending thing (as oppose to black outs) usually solves the issue. For cyano - i've had it form for different reasons - usually from nitrogen release of anarobic bacteria (I think) or something like that and a bit of current to blow the nitrogen away usually solves the problem. I had a tank with the stuff once (an old tank setup for over a year) and it was growing everywhere and quit deep - and then suddenly one day it stopped and a week later it was all gone. Mysteries are great but still concerning.
 

dw1305

Well-Known Member
5 Year Member
Messages
2,791
Location
Wiltshire UK
Hi all,
but it is a bad kind of green algae
I don't know. I don't tend to get much green algae, all the bottoms of my tanks are dark and gloomy places with just <"Bolbitis heudelotii"> and moss and I always have a fairly complete <"layer of floating plants"> and snails etc.

If I have a brighter (more intense) light I just have more plants, so hopefully by the time it reaches substrate levels there are very few photons left.

cheers Darrel
 

MacZ

Well-Known Member
Messages
3,193
Location
Germany
Hi all,

I don't think it is cyanobacteria (in fact I'm pretty sure it isn't), it is the wrong colour but both colour and filaments look much more like a <"Green Algae (Chlorobionta)">.

It is only really green algae that are "grass green", because only they, and all the higher plants, possess chlorophylls a and b.

blue-green-algae-3-768x507.jpg


Basically it would be a darker blue green and a lot more slimy if it was cyanobacteria. Image from <"https://aquariumscience.org/index.php/16-4-blue-green-algae/">

You could also try <"sniffing a bit">.

cheers Darrel
There is a tint of green in the pictures that makes me think it's both cyanos and green algae. Which would surprise me as I rarely see them both.
 

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