Creatures on the glass

[m3rcfh]

Looking for an ID on the creatures that showed up and multiplied on the glass of my tank...
I'm getting some diatoms and a ton of sponges on my month-old tank... is it bad or can I just scrape it off?

 

[kchristensen8064]

Looking for an ID on the creatures that showed up and multiplied on the glass of my tank...
I'm getting some diatoms and a ton of sponges on my month-old tank... is it bad or can I just scrape it off?

Hydroids, some say they are bad, most in my experience go away on their own.

 

[cloak]

Check this out.

https://www.lionfishlair.com/hitchhikers-guide/

HTH.

 

[Dsnakes]

Hydroid jellyfish. I scrape them off when cleaning the glass if they are there. They have never given me issues. Digitate are the ones to worry about.