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Love them. Hate cleaning them. My sump is out in the open so it's easy to glance over and see when to change it which is when it's brownish or over flowing 2 days to a week.
About to buy supplies to make a bunch of diy ones.


My sump uses 2 4" socks. I started with 100 micron, switched to 200 micron, then bought 10 socks. I have to change my socks currently once a week. When I was running biopellets and relying on bacteria to keep nutrients low, I had to change my 200 micron socks 2 times a week. Sometime 3 times.
When I change my socks, I turn them inside out, rinse in the sink, and throw in a buck (no lid). When I put my last pair of clean socks in the sump, I take all the dirty socks and throw them in my washing machine. I do NOT add any detergent or bleach to the wash cycle. I just set the machine to heavy duty cycle and turn on the 2nd rinse option. Socks are clean but not perfectly white when they come out, but they are close and I don't have to worry about chlorine. Besides, bleach doesn't clean, it just takes out the color so it looks clean. Been running my sump this way for 2+ years.
My sump uses 2 4" socks. I started with 100 micron, switched to 200 micron, then bought 10 socks. I have to change my socks currently once a week. When I was running biopellets and relying on bacteria to keep nutrients low, I had to change my 200 micron socks 2 times a week. Sometime 3 times.
When I change my socks, I turn them inside out, rinse in the sink, and throw in a buck (no lid). When I put my last pair of clean socks in the sump, I take all the dirty socks and throw them in my washing machine. I do NOT add any detergent or bleach to the wash cycle. I just set the machine to heavy duty cycle and turn on the 2nd rinse option. Socks are clean but not perfectly white when they come out, but they are close and I don't have to worry about chlorine. Besides, bleach doesn't clean, it just takes out the color so it looks clean. Been running my sump this way for 2+ years.

