galen;1625344. . . . .
if i were you quake and wanted to upgrade the filtration, buy an aquaclear off ebay or drfosters (if you do buy one off dr fosters, copy and pastew the cd-##### they have to the left of the item title and put YL instead of CD in there- you can significantly reduce the price).
this way, you get the best of both worlds.
well, read the first page of this link excuzz... it should make it clear. specifially, read abgtwo post on page 1. it does work- try it after you read!!