What bio media do you use? I've been doing a lot of research on what bio media to put in the new filters for my 135, I'm just wondering what everyone is using and if you like it?
For canisters, I use Seachem Pond Matrix. It's a little bigger than the regular matrix, but about 1/3 the price. The fluval and eheim products work too, but are awful expensive. Others use less conventional media with success as well.
I'm not convinced there are big differences between biomedia. Seachem claims Matrix has more surface area than other types, but I don't know if it really matters.
There were bags of Eheim biomedia in the January auction, so you can find it cheap on occasion.