It works great in an aqua clear 20.
I find it does the job, but maybe not as well as I expected in my Aquaclear HOBs. I don't know, but I am thinking floss may do better in HOBs because water flows over poly pad rather than through them, or so it seems to me.. However, I do like that I can easily add to Ziss for additional filtration and there water flows through - it has to, as nowhere else to go.
Using this in my aqua clear 50 and 30, using the sponge that came with filter followed by a piece of the blue and white filter pad, then a piece of the fine poly pad filter cut to size, followed by bio media in bag (no charcoal). There is a noticeable difference in all the fine pieces getting removed from tank water using the fine filter pad in this line up. Water movement through the filter was not restricted at all. I also use the medium sized course sponge on intake. If you haven't tried one, get one! Very pleased with purchase.
This stuff is super and really cleans up my tank water. It's simple to cut to size and add to my HOB. I will be buying this again!
Great replacement or add on to other filter media. Also added it to my new Ziss bubble filter.
Over $ 49.00
Under $ 49
$ 4.99 Flat Rate