A little help please

[Paddymow]

Ok I've got a few pictures here. Just looking for a bit of info on whats going on inside my tank. The first pic is what appears to be an algae bloom, the picture was taken during the day cycle. the thing that gets me is it all but disappears at night. Both photos were taken under the same light about 12 hours apart.

The third and fourth pics are of something growing that I'm really unsure of.

Thank you

 

[Waddi]

Kinda looks like cyano. The last two pics look like bubble algae to me.

 

[Paddymow]

I think your right on both of those. Any idea why the Cyano almost fully goes away at night but then is in full bloom again in the day?

 

[Trigger Happy]

Never seen cyno do that myself. That's really alien.

 

[Bifferwine]

Some algaes will do that -- it's not uncommon for cyano and dinoflagellates to come and go with the lights.