Help my zoo's are not opening!

[cql]

I have a 30 gallon nano tank with zoos and some soft corals. I've notice for the last week or 2 non of my zoos are not opening. They all remain closed for the last week at least. I've also notice that there are something crawling on some of them. They look like brown sea slug or nudibranch. I've read that nudibranch are bad for the zoos. Can anyone help me with this. Should i do a deep, pick of manually,....... What is the easiest way to solve this.

Thanks,

 

[geoxman]

follow the sticky at the top of this forum on dips. good luck!