Don't get the XP4, if you want reasons contact Oddball. He had an experience with them a few months back.amehel0;846782;846782 said:yeh so what is chemical filtration is it like peat?? i was heading towards the xp4 buuuuuutttttt i will call round the lfs tommorow to see which filters they can get/stock. how can you tell which filters do best mechanical filtration,chemical,biological??
Chemical filtration media is things like ammonia absorbing crystals, purigen, d*nitrate, carbon, peat, crushed coral, phoszorb, etc.