bubbles on top of water ..

[yashinfan]

I have bubbles in one of my tanks, as well. Just one, with a power head and some fake plants. The substrate is large rocks, but the bubbles aren't coming from there. There is a pretty big current in the tank, which is primarily what I stuck the blame on. All I know is that they are harmless. (And yes, I use dechlorinator)

 

[ROLLIN]

Check your tank for ammonia and nitrite if you havent already. Alot of times when you have foamy water you will also have ammonia and nitrite. If the bacterias cant digest all the bits of protein etc (which is probably what you are seeing, a protein buildup), they also cannot digest the ammonia/nitrite (this isnt true for 100% of the cases, but its a likely possibility).

 

[OrionGirl]

Different bacteria deal with protein than those that consume ammonia and nitrite. While there is often a relationship between protein and ammonia/nitrite, it's not always causal.

 

[ROLLIN]

Originally posted by OrionGirl
Different bacteria deal with protein than those that consume ammonia and nitrite.

I know, but I didnt feel I had to complicate my answer by explaining it out. So I just said "bacteria" in general.