02-19-2014, 02:57 AM
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I use an extra filter on my 75g and my aim with that is for max biofiltration. My main filter is fluval110 and the spare is an ancient aquaclear300(now aquaclear70) .
I don't use the cartridges, instead buy cut-to-fit filterpad and stack layers in the basket of the aquaclear70. The layers of filterpad become home to a second bacteria colony and my ammonia and nitrite has been stable at 0,0 for a long time. I've never tried the biomax or other similar biomedia, but sound interesting....maybe I could increase my biofiltration with it, but the filterpad is also excellent at collecting suspended particles.
So... yeah, I would pack the 200 with as much biomedia as possible and ditch the cartridge. A large bag of Marineland Rite-Size bonded filerpad is avialible at petco for $6.00.
Last edited by rsskylight04; 02-19-2014 at 03:03 AM..