OK. here's the story...
1 year ago i inherited a 30 gallon (my very first aquarium) with an emperor 400. it was grossly neglected! couldnt even see the fish! i cleaned it up and have taken good care of it since. weekly pwc
and everything. all was well. Utill... i bought a 55 gal
. the guy at my lfs
told me that i can just dump all off my water in to that one with my old filter and wouldnt have to worry about cycling. apparently false. i'm having huge nitrite problems. daily 25% pwc
for a week and a half and i have just got it down to around 0.3 mg
/l. my fish arent very happy and would like your advice. why cant i control my nitrites?