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Discussion Starter · #1 · (Edited)
Ive noticed lots of tiny little organisms darting around in my sump. After using a 10X jewlers loop, I've roughly sketched the culprits, they look like this:


Some of them seem to have two round appendages ( or eggs) attached to their rears. Can anyone tell me anything about these?
 

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Discussion Starter · #3 ·
I fixed the image link, and as you can see, ( The resemblance is uncanny) that is what I found in my sump. Are they harmful?
 
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