Tiny red slug looking worms in sand bed. Good or bad ?

[Phivo]

What are these tiny red slug looking worms.
There are tons of them in the sand.

Image was taken with handheld micro scope you cant really see them with the naked eye they just look like red specs all over the sand.

Tank is about 2 months old

 

[ISpeakForTheSeas]

What are these tiny red slug looking worms.
There are tons of them in the sand.

Image was taken with handheld micro scope you cant really see them with the naked eye they just look like red specs all over the sand.

Tank is about 2 months old

Welcome to Reef2Reef!

Some kind of ciliate would be my guess - they should be harmless/beneficial.

 

[Phivo]

Welcome to Reef2Reef!

Some kind of ciliate would be my guess - they should be harmless/beneficial.

Thanks.

I also notice my fish swim against rock when the light comes on in the mornings do you know what could cause this behavior.

Ive ruled out parasites because they act normal and look fine during the day they only act like this when the lights come on

My ammonia is zero
I use R/O for my salt mix


I have a royal gramma
And a humbug damsel

 

[ISpeakForTheSeas]

I also notice my fish swim against rock when the light comes on in the mornings do you know what could cause this behavior.

I'm not sure - hopefully someone who knows will comment for you though.