Bubbles on surface of tank

[Willba200]

Hi all, for last two weeks I've had a lot of surface bubbles. Not sure it's coming from hob skimmer as there seems to be no air leaks. Using live rock/sand. Are the bubbles harmful? Also tank is in cycle period

 

[Dav3]

Do you have any surface agitation in that area?

 

[Willba200]

Water is moving slightly from powerhead. Should I point it up more?

 

[Dav3]

More surface agitation and surface skimming will help with that.

 

[Willba200]

How do you mean surface skimming?

 

[Willba200]

Sorry for sounding stupid but I want to get my tank right

 

[melosu58]

That is a protein sheen on top of the bubbles. Pointing a PH up slightly will cause surface agitation and will dimmish it.

 

[Willba200]

Ok thank you for advice. So glad I signed up for aquarium advice it's brilliant. Getting so much info! Once again thanks

 

[Willba200]

Bubbles still there! Could it be protein skimmer is not worn in yet? When I eventually get fish ect will it be harmful ?

 

[Dav3]

If there aren't bubbles in the water column then probably not skimmer. Sounds like a stagnant water like film.