What the heck is these?

[Icedtealeaf]

hey guys, I was just cleaning my tank when I spotted these weird things on the glass. There are 6 of them in a line and extremely small. I don't know what they are but I'm concerned. am i doomed? BTW this is a 6 week old tank and my first salt water tank. Any help is needed. Should i wipe them off the glass? also, I did have a Mejano that i tried to kill but I ended up removing the whole rock it was on. I don't think these are but is it possible they are small Mejano babies? their all grouped together so I don't know!!!

 

[ISpeakForTheSeas]

Medusa stage hydroids - they're common in newer tanks. Unless they're a photosynthetic species or you have enough pods for them to feed on in the tank, they should go away after a while.

 

[Icedtealeaf]

Medusa stage hydroids - they're common in newer tanks. Unless they're a photosynthetic species or you have enough pods for them to feed on in the tank, they should go away after a while.

Are they gonna negatively effect anything if they stay? I think ive got a tonnn of co pods, I think they are little white things that ate my diatoms ? They’re all over my glass and very tiny

 

[ISpeakForTheSeas]

Are they gonna negatively effect anything if they stay? I think ive got a tonnn of co pods, I think they are little white things that ate my diatoms ? They’re all over my glass and very tiny

They might; some hydroid species have some decently potent stings and may harm things they touch as a result, which can be a problem as they reproduce and grow in population.