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Can anyone identify this?

mattyratty78

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18 Nov 2021
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Marsworth
I have a planted tank with dragon stone. There's a red covering on the rock that I'm not able to identify, can anyone help? There's no tufts/hair on it, if it wasn't red I'd say it was cyanobacteria but this stuff doesn't scrub off with a toothbrush. It just makes it unsightly.
 

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Shuster

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14 Apr 2020
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Israel
I have a planted tank with dragon stone. There's a red covering on the rock that I'm not able to identify, can anyone help? There's no tufts/hair on it, if it wasn't red I'd say it was cyanobacteria but this stuff doesn't scrub off with a toothbrush. It just makes it unsightly.
Looks like bba to me

Sent from my GM1913 using Tapatalk
 

Angus

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29 Aug 2008
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Vauxhall, London.
Having stared at the picture for eternity, it seems there are bubbles inside some of it on the left side and a more purplish colouration which is indicative of cyano.
Closer picture and some more info would be lovely.
 
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Stan510

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20 Oct 2021
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Hayward ca
I would go with Cyano. Not all are blue green but its also common to be red or brown. Look at any youtube video of the German Public aquarium with the large freshwater Amazonian fish- its allowed to cover everything..rocks,wood. I guess they like it for some reason. The cause is a ton of huge fish!
But,I think that brownish one is easier to cure a tank of. Wipe,clean filter. Make no water changes imo as it just feeds the algae. I know,everybody else will tell you,make big water changes..but I tell you,clean that filter twice a week while netting out the scum as you wipe it.But,I get that people will go to big water changes. I just don't see that ever curing cyano's,just the opposite.
 

Angus

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Vauxhall, London.
I would go with Cyano. Not all are blue green but its also common to be red or brown. Look at any youtube video of the German Public aquarium with the large freshwater Amazonian fish- its allowed to cover everything..rocks,wood. I guess they like it for some reason. The cause is a ton of huge fish!
But,I think that brownish one is easier to cure a tank of. Wipe,clean filter. Make no water changes imo as it just feeds the algae. I know,everybody else will tell you,make big water changes..but I tell you,clean that filter twice a week while netting out the scum as you wipe it.But,I get that people will go to big water changes. I just don't see that ever curing cyano's,just the opposite.
50% water changes daily for 1-2 weeks and manual removal worked for me 3 different times, my BGA definitely coincides with neglect, and i do have hard water, i don't know if that makes sense but thats the conclusion i've come to atleast.

In reef tanks it may well be a different dynamic because i have seen tanks where you just can't get rid of the pinky/brown stuff no matter what you do, water changes, no water changes, manual removal, let it be etc big blankets of the stuff that you can peel off the rocks with a syphon.
 

jaypeecee

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21 Jan 2015
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Bracknell
Hi @mattyratty78

I am unable to see anything red inside the areas that you have marked. And, even when I zoomed in, I still couldn't see anything that fits your description. It's odd as some people can obviously see the offending item/substance.

JPC
 

Angus

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Vauxhall, London.
Hi @mattyratty78

I am unable to see anything red inside the areas that you have marked. And, even when I zoomed in, I still couldn't see anything that fits your description. It's odd as some people can obviously see the offending item/substance.

JPC
1637622261636.png

i just thought it looked kind of like the marine cyano ive seen, never seen it in my planted tanks.
 

jaypeecee

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Bracknell
Hi Everyone,

What I see in the enlarged photo immediately above is something brown with short green strands on it. As I've never used Dragon Stone, I wouldn't know what its natural colour is. But, is it not possible that the natural colour varies from one sample to another? Just a thought.

JPC
 

Angus

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665
Location
Vauxhall, London.
Hi Everyone,

What I see in the enlarged photo immediately above is something brown with short green strands on it. As I've never used Dragon Stone, I wouldn't know what its natural colour is. But, is it not possible that the natural colour varies from one sample to another? Just a thought.

JPC
Enhance! 🕵️‍♂️😅
 

MichaelJ

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9 Feb 2021
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Location
Minnesota, USA
HI @Angus as far as I can tell from the pictures it is diatom / Brown algae ... very common on dragon stone (possibly related to the high silicate contents) and in immature tanks in general. It will recede as the tank matures. As always, the standing advice is to always look into your CO2 application, flow and light intensity as well.

Cheers,
Michael
 
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jaypeecee

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Hi @Angus

As your Enhance! comment was in response to a post I'd made (post #9), I thought you were asking me to enhance the picture. That's why I was confused. We need some feedback from @mattyratty78. Agreed?

JPC
 

Angus

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29 Aug 2008
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665
Location
Vauxhall, London.
Hi @Angus

As your Enhance! comment was in response to a post I'd made (post #9), I thought you were asking me to enhance the picture. That's why I was confused. We need some feedback from @mattyratty78. Agreed?

JPC
Agreed! and there is quite the colony of something on the left hand side of the glass there... get the scraper out matty!
 

MichaelJ

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9 Feb 2021
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Minnesota, USA
Hi Folks,

It looks as if @MichaelJ has won tonight's star prize!

JPC
@jaypeecee , the evening is still young here in the midwest... :lol: ... btw. sometimes I find it helpful to download the pictures that are posted and open them up in an image editor for closer inspection... just simple stuff, like playing with the brightness and contrast, to get a better sense of what I am looking at.

Cheers,
Michael
 

Stan510

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20 Oct 2021
Messages
355
Location
Hayward ca
That's Cyano and it's something more of in the water and light then the type of rock. Use a toothbrush,try to gather any sheets with a fine net and clean the filter often and you will see it fade.
OP might also add more plants to stabilize the system.
 

MichaelJ

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9 Feb 2021
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Location
Minnesota, USA
That's Cyano
Nope! Of course there is an off possibility we are commenting on different things... What I see is most likely Diatoms.... What you see may be something else.

In addition, @jaypeecee already awarded me tonights star prize! :lol: .. and he is somewhat of a Cyano aficionado.
 
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mattyratty78

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18 Nov 2021
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4
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Marsworth
Thanks all

See attached for better picture. It's not diatoms, I've had that on most tanks when they're new. This is really hard to remove, I've scrubed with a toothbrush and it doesn't touch it, it feels a bit slimy to the touch.
 

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