is it a problem to add a Anemone to the tank

[the floor guy]

ok so i have had my 110g up and running over 3 years i plumbed a 40g into it put new live sand and 99% cooked rock i was thinking starting with live sand i wouldnt get a cycle i am getting brown spots on my rock and sand after 3 weeks. i already have sps and zoas in the tank.

is it a problem to add a Anemone to the tank ?

 

[MarineFlake]

A 110 g tank runnning for 3 years should be a great home for a nem, provided the lighting is sufficient and the parameters are good.