the parameters probably read zero because there has been little nitrogen in your system to feed bacteria that convert from NH3 to NO2
ie some fish food r other source of protein
these bacteria will grow slowly in response to feding hence you should have seen the NH3 rise and drop
the nest stage is the conversion of NO2 to NO3 and this requires a second different group of bacteria to develop again you should see a rise and then fall in NO2
all this should happen before fish are added
dont feed your fish much and feed them only every other day , the less food waste(NH3) the less they pee and poo(more NH3) all this NH3 is poision.........(sometimes i wish i could keep new fish keepers who dont read before they play in a bowl of their own urine for a few weeks !! sorry it just seemed appropriate!
next checking daily will be a bit of a pointless exercise it wont if you follow above change that quick, actually strike that if you have a small tank (tempted to say smaller than your knowledge base)then were in trouble
your going to have to play a balancing game now
NH3 is bad for fish and food for first stage of cycle , we need it and it is bad
really for the fish you wont a reading of zero maybe aim for less that 0.25mg/l of NH3
by the way NH3 and NH4 are interchangeable
then we should see the NO2 rsie again ty again keep it below 0.5mg/l preferably less
the NO3 is the least toxic to the fish
you really havent done things correctly
if you can get mature filter media from a friends established tank get some
otherwise buy one of those supposed filter bacteria cultures from the lfs
fingers crossed the fish stay healthy and maybe 15% changes every other day
read before you start killing fish
this forum has exposed me to the ignorance in my hobby and really disheartend me
please dont take this personally royboy, i'm just upset after only a few days of reading posts here
i'm just sick of twits killing fish through ignorance
bye before i lose it
andrew