What is this?

Raceman

Member
Mar 24, 2014
13
Phoenix
Not strictly related to Algae, but seemed like the right place.

I keep getting these in my pre filter. I have tried huge amounts of chlorine, but these seem impervious to it. They are about 1"-1.5" long, and there were several of them in the basket yesterday when I cleaned my filters.

Has anyone got any idea what they are, and what I need to do to deal with them?

Thanks in advance,

Paul
 

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