small bubbles on rocks

[stephenamsler]

some of my rocks have little bubbles on them that randomly float to the surface and are not attractive. they are not near a powerhead or return. what are these? they dont go away

 

[mvm]

Do you have any cyano?

 

[ralph atl]

does it happen more in the evening?

 

[stephenamsler]

whats cyano? its alday but cpme to think of it i notice it more at night

 

[reefscape]

sounds like cyano...or the start of it

 

[ralph atl]

I can't tell you what it is w/o further info, but best guess is that it's just algae which produces more oxygen during the daylight hours and builds up the longer the lights are on. no big.

however, it could be many things. need pics & more info.

 

[stephenamsler]

2 years

 

[stephenamsler]

should i just siphone them off when i do my water changes?

 

[stephenamsler]

should i try chemi clean?