ok I will look for that part. I feel bad, I a 50% water change so I assumed that there was still enough good bacteria. I have one guppy left and she looks like she is going to go too :(. The rest of the guys so far, look ok.
I have a 29 gallon tank that has been doing really well for months, last week it started getting somewhat cloudy, did a partial water change and it was fine for a few days but started getting greenish/cloudy again relatively quickly. During this time I noticed the rasbora had a sore on his tail...