Any help glass ID

[Nemo5]

Hello , my tank is very new still and was curious what is growing or could be growing on my Aquarium glass ?! The picture with double circles is these very little thingys grouped up and in like a web like , second pic almost seems like a brown haze like it’s getting to be !

Should I be cleaning the inside of my tank regular like the glass ? I haven’t been do to letting stuff be to have food for snail and grabs if it went to sand ?

 

[saltyfilmfolks]

It’s stringy an algae. Def clean the glass.

The circles look like corraline. It’s hard if you scratch it off with a fingernail.