Mould in my filter? - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 17 Old 09-15-2012, 08:25 AM Thread Starter
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Mould in my filter?

Hi guys,

I am currently trying to fishless cycle my 30L (8G) tank. Couldn't source pure ammonia so had to use the shrimp method. It kinda stank even with water changes so a few days ago I took it out and switched to the fish food.

Now yesterday I noticed these brown/gray patches on my filter media (mesh/wool) and am wondering is that the bacteria colony or is it mould? Is kinda musty smelling so am thinking it might be mould from the shrimp :(

Does this mean I need to start again? I've been getting confusing readings the whole time (I have all the details in the "Early Stages of Cycling 30L tank" thread)

http://www.tropicalfishkeeping.com/f...-early-114005/

Last edited by FlyingFish47; 09-15-2012 at 08:31 AM.
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post #2 of 17 Old 09-15-2012, 08:42 AM
Mold and mildew are not aquatic although they only exist on wet or damp surfaces.
It's possible that if wet media is also exposed to air that mold may grow on the damp surface - but not under water in a filter.
Can you take a picture?

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post #3 of 17 Old 09-15-2012, 09:10 AM Thread Starter
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Just trying to upload one now, Photobucket is being difficult! The media is submerged most of the time...
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post #4 of 17 Old 09-15-2012, 09:28 AM Thread Starter
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Can't get it to display for some reason!

Last edited by FlyingFish47; 09-15-2012 at 09:32 AM.
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post #5 of 17 Old 09-15-2012, 09:42 AM Thread Starter
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post #6 of 17 Old 09-15-2012, 11:54 AM
That just appears to be normal decayed organic matter that gets trapped in the sponge - it's very normal (that's what you have a filter for).

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post #7 of 17 Old 09-15-2012, 02:31 PM Thread Starter
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okay, phew! am guessing shouldn't touch it then? and does it matter if it smells a bit? Just don't want it to be impeding my bacteria....
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post #8 of 17 Old 09-15-2012, 02:57 PM
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I get that all the time (or when I forget to change the filter). I dont know about touching it. I have because that doesn't gross me out, but other people hate that stuff. The smell is prob just the filter cycling.

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post #9 of 17 Old 09-15-2012, 03:46 PM
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Originally Posted by Pearl2011 View Post
I get that all the time (or when I forget to change the filter). I dont know about touching it. I have because that doesn't gross me out, but other people hate that stuff. The smell is prob just the filter cycling.
C'mon girls, it's decaying/decayed organic matter - no 'posed to smell like a daisy!

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post #10 of 17 Old 09-15-2012, 04:21 PM
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Looks perferctly normal to me too. When it gets to be sludgy, swish it in tank water when you do water changes. Don't rinse it under tap water.

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