Just ordered some yesterday.. But nudi's won't really affect hydroids. Manual removal only way. They are a huuuuugggge pita.. Good luckI have a bad infestation of colonial hydroids in my tank. Read on reefcentral that Berghia Nudibranch eats them. I would like to test it out and see whether it works. Let me know if some one can sell one to me. Thanks.
+1.. Where I grabbed... Cheapest shipping... And yes they will help... Thts all they eat
Wow thank god I didn't have that kind.. I had little thin ones... I just throw the frags out.. No joke... Don't wanna deal with them
This is how they look