foamy bubbles at the top of my tank

[academyy_xx]

So the other day I posted a thread explaining that I had air bubbles on the top of my tank, but today I noticed that the bubbles are now starting to get a little bit foamy near the filter. I was wondering if anybody knew what that could be and how I could prevent it or get rid of it.

 

[academyy_xx]

Also, I unfortunately cannot upload a picture because it tells me that it crashes so I cannot really show anyone what it looks like.

 

[vaquero]

So the other day I posted a thread explaining that I had air bubbles on the top of my tank, but today I noticed that the bubbles are now starting to get a little bit foamy near the filter. I was wondering if anybody knew what that could be and how I could prevent it or get rid of it.

what fish do u have in the tank?

 

[academyy_xx]

Two red - tail sharks, green tiger barb, black banded leporinus

 

[Wroberson]

I used to get that in my floating plant nest. It could be phosphate that causes the foamy look. Phosphate is in soap. More water movement should disburse the bubbles.