Blue Donuts Filter Sock 200 Micron, 4 Inch Ring by 8 Inch Long, Aquarium Filter Sock, Saltwater Filter Socks, Pack of 8, White

Good socks. Like the top rim. Fast shipping.

Fit perfect and filter great

Great price and very well made but both socks become clogged in one day. In their defense I have a sand bed and messy stingrays but BRS 200micron socks last 3-4days before clogging If you change the socks in your system daily these would be great!

I bought these because one reviewer mentioned Red Sea. For them to work in Red Sea Reafer tank they must fit flush and they do not. I tried a raser knife to trim them. Still did not fit. For other uses they should work fine.

Great socks works as advertised but it’s kind of a pain to put the sock inside out for cleaning. Other than that it does it’s job

They work great

I use these filter socks in my sump tank on a reef tank. They need to be washed out every other day so that means they’re doing well to filter out all debris from my tank.

Works great!