Ok, I am running a bog standard, straight out of the box Titan 510 set up using my own delicious carts and am loving it, but after 3 weeks of using 2 alternate atties and rinsing them in hot water and letting them dry I have noticed that the draw is getting tighter and , as I am new here and alittle over keen, I saw the thread about cleaning with baking powder and vinegar and gave it a go. I did it several times and then rinsed and this is when I noticed some threads which I assumed were loose threads from my aquarium filter wadding. They weren't, it was the stuff that is meant to be there. What is it and what is it's purpose? It seems to be working well without it so is it ok to use it or am I going to do damage? I know these things don't last forever but I am trying to look after my kit. I tried searching the atty forum but without knowing what the term for it is, I didn't really know what to look for! Sorry to be such a noob 
