After washing the 4" filter socks in the washing machine for 2 to 3 times without any soap, just water only. I let them dried and place them in the sump. Every time I do this the skimmer goes crazy and will not skim for 6 hours. Could you please let me know what is going on? Is it the material is polypropelene instead Polyester? Thanks
Should I use a little bit of bleach?
Should I use a little bit of bleach?
Last edited: