My ammonia problem has finally cleared up! I tested the water in both tanks last night only to find the following readings:

Nitrate:2 ppm
Nitrite:0 ppm
Ammonia:0!!!!!!!!

I can't believe it but it's about time. I was starting to get sick of all the water changes but now I can cut back a bit and save some money for a bigger tank I don't have to buy so many treatments now so I can put a bit of money aside every couple of weeks...that's if I don't spend it on plants for the 10gal tank. I'm thinking of a live plant setup but I've got plenty of research to do before that happens.

Anyway, I just wanted to say thanks to everyone who helped me shift the ammonia from the tanks I couldn't have done it without you..

Pleased its all worked out for you

glad the amonia problem cleared up

Thanks guys. I can finally relax a little bit now and cut down on the water changes. My parents have been on my case about the amount of water that I've been using, which was close to about 1000L a week.
But, as is the tradition with goldfish, one problem clears up and another presents itself...

http://www.kokosgoldfish.invisionzone.com/...=0&#entry599186