What is this? Algae ?

[mtealeaves]

This is a new but cycled tank. Looking at the stringy things on the bottom of the rock. Parameters are good (I don't have noticable algae elsewhere). It's on a live rock that I got from someone who had there tank setup for years. I currently only have hermits for cleanup crew. If this is algae should then is it time for some snails?

Thank you!

 

[NC AL]

It could be Bryopsis?

 

[Gumbies R Us]

Photos under white lights?

 

[Sophie"s mom]

Definitely need pics under white lighting. Hard to tell anything with all that blue.

 

[BonnieB]

Hard to tell without white light but I’m thinking bryopsis

 

[mtealeaves]

This is a new but cycled tank. Looking at the stringy things on the bottom of the rock. Parameters are good (I don't have noticable algae elsewhere). It's on a live rock that I got from someone who had there tank setup for years. I currently only have hermits for cleanup crew. If this is algae should then is it time for some snails?

Thank you!

 

[mtealeaves]

Hard to tell without white light but I’m thinking bryopsis

 

[BonnieB]

Hard to tell without white light but I’m thinking bryopsis

OK so that doesn’t look like bryopsis in white light. Look more like sponge filaments. My second guess would be hydroids but honestly not sure on either. Let’s put this out to #reefsquad

 

[BonnieB]

Hard to tell without white light but I’m thinking bryopsis

OK so that doesn’t look like bryopsis in white light. Look more like sponge filaments. My second guess would be hydroids but honestly not sure on either. Let’s put this out to #reefsquad

Oh and I forgot to say, if you poke them and they retract, I’d move hydroids up to my first guess!

 

[Red_Beard]

I don't recognize it off-hand. It does not look like hydroids to me though. I don't think i would be overly worried with it though, it doesn't look like anything invasive or harmful that I have seen.

 

[Rocks reef]

It appears to have a 'stalk'. It doesn't look concerning. I would watch it and see if it starts to spread.

 

[tbrown]

I have that stuff in my tank. Tends to stick to shadows and undersides of rockwork. I'm fairly certain it's not harmful - seems to be a filter feeder of some sort.