Hello, for my 120g tank I am currently using x2 75 gallon Aqueon quietflows for filtration. I have had the tank going for a little over 3 months now, and am finding purchasing a lot of filter cartridges. I've done the math and I'm doing about $2.50 per cartridge doing 4(2 per filter) about every 2 weeks, which adds up. I've been looking at switching over to filter floss as it would lower it to $1.10 and I can make a bunch at once(link below). My question is, for sowing filter floss, what is safe to use, and are there any major cons to switching over? I would like to put some carbon and possibly some other stuff in between the filter floss as well.
https://www.amazon.com/gp/product/B01AHHN4VW/?tag=ff0d01-20
https://www.amazon.com/gp/product/B01AHHN4VW/?tag=ff0d01-20