It all depends on what sort of tank you're putting them in and what lights you have etc.
So....
What tank are they going in?
What lights do you have?
What else is in the tank (corals, fish, other anemone?)
How long has the tank been up?
What are your tanks parameters? (Salinity, ph, temp, ammonia, nitrites, nitrates)
How long have you been keeping saltwater fish?
What is your maintenance regime?