I agree with the filter issue. Many tanks come with a filter that is indequate for a stocked tank - therefore, a 10gal tank comes with one rated for up to 10gal which isn't enough for a 10gal with fish in it.
Originally Posted by mermaidwannabe
I also agree that the bacterial bloom would indicate you lost some of your BB along the way somehow.
I would also do larger than 25% water changes at this point (more like 50%) - even if they don't help the fish you mentioned, you want to avoid further stress/illness until you can start testing your own parameters.
46 gal fw tank with black skirt tetras, neon tetras, spotted cory catfish, cherry barbs, guppies, snails & 4 amano shrimp - plastic & live plants
5 gal QT with green corys & 2 guppies