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Slime inside my filter

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Hi friends, in the last 2 weeks I discovered in my filter brown slime that stuck the filter from bringing out water, I have no picture of it but I found exactly the same problem in this picture.
I think this slime is also the oily layer on the aquarium surface, need your help!
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12 Posts
Discussion Starter · #3 ·

50L aquarium,
Nitrates parameters ok
50% water change every Sunday.
I clean my filter once a week since my aquarium has created (one year)
I think this slime in filter also is my surface film..
And that’s cause fluctuating co2 levels, since I turn my skimmer 4 times a day and it comes back after 2 hours there is this surface film again..
Since this slime I need to clean my filter 3 times at week
But I try not to wash my media every time…
I clean it with aquarium water

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