Filter Media Bag for Purigen

[Will4VT]

Just bought some Purigen from my local fish store and 2 media bags and the Purigen is just to fine for the bag I have. Can anybody recommend a very very fine mesh bag for it?

I know Seachem makes "The Bag" but they are like 7-9$ a pop and I really dont wanna pay 20$ some for just a bag. The ones I got were like 1.50$ thats what I'm looking for.

 

[Will4VT]

Also since "The bag" is like 7$ and Purigen 100ml with the bag is like 50cents more could you just buy the purigen then after it is exhausted just cut the bag and replace the purigen? Or is "the bag" differenet from the bag that comes with the purigen.