Yikes! I honesty have no clue what happened then! When did you last do a water change?My substrate is black gravel.
I filled up a clear pitcher with tap water and there are thousands of what appear to be bubbles. Although the particles in the tank are much smaller. They look like microscopic bubbles, but don't seem to go away. If I agitate the water, they continue to swirl around and look the same as the tank when I shine a light through.
Maybe a bacterial bloom?
The fluval c2 has a fine filter pad on one side.
No improvement as of this morning. The Fluval C2 should be exchanging the water 12x per hour, so this is puzzling. I'm thinking it must be the large white ornament. Although I removed it and cleaned it really well the other day. I suppose I should remove it and if things clear up, that will give me my answer.
Both the ceramic cave *AND* the fizz tabs create white particles that float. It could be either or. The filter intake, I'm assuming, is several inches below the surface of the water. It's not going to get floating debris. You have to skI'm the surface of the water with a net for that.
I would do a bigger, maybe 50% water change until it clears up. Are they just floating around or sitting on the glass?I turned off the filter and let things settle. The white particles are still present in the tank and on the surface, so definitely not micro bubbles. I did a 30% WC and skimmed the surface. Looking better but still a bunch of . I'll keep doing daily water changes until it clears up.