Hi, thanks for your responses, i will test the water, this morning i put in another filter which is seeded, the one in there came with the tank and they told me it had been in there for ages, it hasn't helped with the cycling, so i added the other one. I will check it in the morning. I thought with Stability that it was safe to add fish, as long as i continued the treatment for the 7 days, or that was what i was told. I tested the water yesterday and got 0 on everything, hopefully the added filter will help. I went through some old posts regarding stability and apparently you should have fish in the tank, I thought it was a fishless cycle thing, so thanks for the link, I will give that a good read.