Is this to go in the 75 fowlr? if so what is the lighting on that tank? Anemones require very good water conditions and strong lighting.
Also, clowns can be perfectly happy in home aquaria w/out an anemone. They like it but can live and thrive without them in our home tanks.
Also, not sure how old your tank is, but it is recommended that your tank be at least six months old and very stable before adding or attempting an anemone.