I've just come back from the lfs after taking my fish back. I've had two fish die over the past couple of days and just didn't think it was right to carry on with them in the tank. I'm hoping that the ones I took back will do ok - felt a bit bad really because someone will buy them and they might be a bit weak but didn't kniow what else to do.
I've cleaned out the tank, and washed everything and Im going to start again from new.
Watch out for some fishless cycling questions!