pretty confused here.......i have had a 30 gal tank up and running for 6 weeks now........ammonia has gone from 2.0 to 1.0 to .5 then back up to 1.0.........(after reading post after post, the general consensus seemed to be, to do water changes to get the ammo. down.......well, i have been doing that, to no avail...........everything, i read, says that if ur test kit detects ammo. that is no good.........i never have seen a nitrite spike ....and nitrates r still at zero................i have used stress zyme recently.....to jumpstart the bacteria.............the fish "seem" to be doing fine...........i have 8 various tetras and 6 corys (i know.....i overstocked to start, couldnt help myself)..................any advice?..........i need to know when this tank is going to cycle?...........i know with all the water changes, i have retarded the process...............any advice?????????