25 micron socks and Purigen is what I use. Purigen works like carbon, but has none of the side effects and can be recharged pretty much for ever. I have some in my 90 that's probably 5 years old and still works great. As good as any diatom filter I've tried and pretty cost effective. I have tons of wood in a few of my tanks and it keeps the tannins in check.
I have never heard of purigen? Would you use it the same as carbon? Just out it in a net/screen and throw it in the sump? And how do you recharge it and how often do you need to recharge it
I have used quilt batting from walmart (I would imagine its very similar) and it was awesome, no washing and very cheap but I don't think it caught the small particles that im after...i use polyfiber pillow, you can get a bunch of it and it's dirt cheap.
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http://www.amazon.com/gp/product/B0..._m=ATVPDKIKX0DER&pf_rd_r=0SRP3B1VPFP5RGY8EQ0A
this is what i use.