Namvo 4pcs 200 Micron Fish Tank Aquarium Marine, Sump Felt Pre Filter Socks, Filter Bags, Filter Socks Marine Tank- 200um

I bought these to help siphon off dinos from my tank. Immediately I noticed I had to double up on them as the dinos were not being retained in the sock. I washed them only once and as I always do, washed them inside out. They have disintegrated and fluff everywhere. If you only intend on using them once, fine, otherwise purchase the Red Sea ones.

they are too hard very difficult to clean

Not very good only lasts few days then have to change