Today i decided to properly clean my canister filters as i have not done it (had them 6 months) i decided to fill a bucket of water with white vinegar and baking soda. Placed the inlet/outlet inside the bucket. I rested a net over the bucket with some filter floss stuffed inside and plugged it in. I came back to it after 1 hour only to find the filter floss covered in small debris ! I was amazed how much crud was lodged in the hose and filter ! I wish i had taken a pic to show you guys. My filters run more silent now and the flow rate has improved.....I will be doing this every 4 months or so from now on.