Tank cycling

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Hello all, I am currently 3 weeks into cycling my tank with a peice of live rock and the rest is normal rock. I have noticed these changes to the rock.  Is this normal?

Also should I do water changes whilst cycling ?

Thankyou Charles

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Livvie

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Reply #1

Hey that’s normal. Diatoms (looks like brown algae) - they grow on the sand, glass, rocks etc (basically everything)
I believe It’s to do with the silicates in a new tank and after they are all used up, the diatoms die off. Happens in both fresh and saltwater, just clean it off for now and it’ll slow down eventually… But then you may get a different kind of algae after that

Apparently adding new sand to a more mature tank can also cause a diatom cycle because of the nutrients added with it.


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Livvie

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Reply #2

Also, even though you only started with one piece of mature live rock, so long as it’s all a porous reef rock it will all become live with bacteria as the tank cycles


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charlesdavies007

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Reply #3

Hey that’s normal. Diatoms (looks like brown algae) - they grow on the sand, glass, rocks etc (basically everything)
I believe It’s to do with the silicates in a new tank and after they are all used up, the diatoms die off. Happens in both fresh and saltwater, just clean it off for now and it’ll slow down eventually… But then you may get a different kind of algae after that

Apparently adding new sand to a more mature tank can also cause a diatom cycle because of the nutrients added with it.


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It's getting worse . Is that normal?

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Livvie

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Reply #4

Yeah mine did the same thing. Got worse and then eased up a bit. I just cleaned the glass every day with the magnetic cleaner. My tank’s still quite new (set up in feb) plus I keep topping the sand up so I’m still getting a bit of brown stuff. Honestly don’t panic xx


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ScapeEasy

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Reply #5

I’m new to all this too, so hopefully someone else can verify this but I would reduce - even turn off completely your lights if you are currently running them whilst cycling the tank.
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Livvie

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Reply #6

I’m new to all this too, so hopefully someone else can verify this but I would reduce - even turn off completely your lights if you are currently running them whilst cycling the tank.
I do wonder if that would just delay the diatoms?
I didn’t get a cycle of diatoms until I upgraded my lights and the tank was already a couple months old.
I think they go away once all of the nutrients in the environment have been consumed so maybe letting it go through the cycle in the beginning is a good thing? They might come and go quicker.
But this is just my thoughts and experience :)


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Last Edit: May 30, 2021 7:44:36 pm by Livvie
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Livvie

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Reply #7


How is it going now?


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Animal

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Reply #8

Hello peeps ,
It’s all normal , we all go through the dreaded brown stage at first all part of the cycle ,
You could try this stuff , I use it every water change and also when I first set up my new tank .
This stuff is brilliant , does what it says on bottle ,
Stability.
See picture enclosed, google it for info , you can buy it on Amazon quite cheep .
Dave
 8D

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