ugh Hydra (I think)

[ChgoGoodGirl]

So I'm having a problem with, what I think are hydra. Thy are mostly in darker areas of my tank the underside of rocks, on the back of the tank behind the rock-scape and sadly, theunderside of one of my hammer corals.
Anyone know what eats these little suckers or what I can do to get rid of them? I'm also fighting dinos right now so this is all getting a little depressing.

under microscope...

Tank info :
40gl AIO - 1.5 years old
Lighting - viperspectra 165
Sal. - 1.025
PH - 8.1
alk 7.7
nitrate - 10
phos-.05
cal. 430
mag. 1220

 

[vetteguy53081]

Yes and hydroids. Simply starve them and they will soon thin out and then gone.
Starving them is simply directing water flow towards them, not at them. They then can’t eat and survive