will Hypo salinity kill all the inverts in my tank ?

[DEAD_BY_DAWN]

Thanks for the links and posts,i just got off the phone with chris at big als i was told that the best medication for reef type setup was RxP Parasite Treatment by kent marine has anyone used it before ?,it recomends takeing out lions aand a few other fish for some reason,and starfish,so snails etc will be fine ?,thanks again for everyone who is helping me kick this ich...