Hmm it sounds an aweful lot like new tank syndrome to me, this link will explain all;
http
/www.fishforums.net/index.php?showtopic=10099
There are a lot of very useful articles in the beginner section at the top which may also be of much help

.

Excellent information

That's what I have needed to read(read jonesyuk fishless cycling in link)And have now discovered so much information on cycling a tank

So you just add amonia measued out like it says.I cycled my tropical tank for four weeks with nothing as I didn't know this wealth of information.I was lucky I haven't lost more fish

Well this will be good information to know as when I get the six foot 570 litre tank for them I will cycle it properly and finally they will be stress free which I'm assuming they are stressed at the moment

Well from what I have read I will keep doing daily water changes and there is some hope from what I have read in the links as amonia converts to nitrite and then to nitrate the fact that my tank the amonia has dropped and the nitrite and nitrate increasing this must be a sign that the bacteria is starting to settle in I think

Well I'm praying I don't lose any fish I have had them for about four weeks now and they have all survived.Do you think they will be ok as long as I do the water changes everyday until the amonia,nitrate and nitrite read zero(Iread in links)

Well I'm very appreciative of the information you have given me it will help me greatly with my future fish tanks

Cheers from Steph
Glad to help

, just keep on those daily water changes and testing the water quality, if you see any nitrites or ammonia, do a small water change with dechlorinator- its important to use dechlorinator in all water that goes in the tank as chlorine can kill off your beneficial bacteria.
Also keep an eye on your fishes health as stress from unstable water quality conditions can sometimes bring about desease/illness, so make sure you check your fishes physical condition (like sores, cotton-like or slimey growths, white/stringy poop, bloating or scales sticking out etc) and behavior every day (gasping at the surface, rapid breathing, fish hanging around on its own not eating etc are not good signs)

.
When you clean your filter sponge, just roughly rinse it out in water from water changes every 10 days (or one to two weeks) or so as overcleaning the filter sponge or washing it out in untreated tap water can kill off your beneficial bacteria that grows on it and helps prevent water quality problems.
Also make sure you keep the filter running 24/7 (apart from when you clean it of course) as its important for the bacteria to have a flowing source of water over it to give it oxygen to survive- make sure there is no uneaten food in the tank a couple of minutes after you feed your fish as this is a sign you are overfeeding them as fish food can rot quickly and cause water quality issues or even harbor nasty deseases like columnaris.
You should only need to keep your tank lights on for 11hrs a day tops, the lights are mostly there just for plants to grow, but if you leave them on too long you can get algae problems (particually if there are no healthy live plants in the tank to take up excess nutrients) which can be a pain in the bum to get rid of. Algae is not a problem to the fish but can look unsightly.
Make sure you clean your substrate once a week too- you can buy a gravel vac to help you do this if you have gravel, or a syphon if you have sand- or you can just stir it up with your hands, net out any waste, and then do a water change

.
Good luck with your fish keeping and keep us updated if you have anymore problems or questions etc

.