I did a search on "green x" in the forum and didn't exactly find what I was looking for, so I appeal to you guys to help me out since you've been so good at answering all my other questions! 
In my aqua clear 30 on the 25 gal tank, I have a sponge, an active carbon bag and a bag of "green x", since the LFS guy told us it was really good for keeping nitrite/nitrate levels under control (which is a huge plus, always!) The filter came with a biomax bag, but he told us the green x would likely be better for our tank, so that's how we set it up.
I was just wondering if anyone had preferences between the biomax and green x and if I am maybe using it wrong (I read you use it only if you have algae problems, but I have a pleco, so that's not really an issue!
). I also have an undergravel filter with carbon and sponge, but we didn't find it was working very well, hence why we added the new filter.
Any thoughts anybody?
Thanks!
Jade
In my aqua clear 30 on the 25 gal tank, I have a sponge, an active carbon bag and a bag of "green x", since the LFS guy told us it was really good for keeping nitrite/nitrate levels under control (which is a huge plus, always!) The filter came with a biomax bag, but he told us the green x would likely be better for our tank, so that's how we set it up.
I was just wondering if anyone had preferences between the biomax and green x and if I am maybe using it wrong (I read you use it only if you have algae problems, but I have a pleco, so that's not really an issue!
Any thoughts anybody?
Thanks!
Jade