rbta question

[Go29]

hi, after asking about carpet anemones a while back, i decieded to go with a rbta instead ( more suited to my 29 reef, and cheaper) i ended up buying one from a lfs for 38 dollars. from alot of online vendors this seemed like a great price. anyway, it is only about the size of a 50 cent piece ( when fully inflated ) and sotimes only the size of a quarter. so are smaller ones harder to care for?? also how fast with it grow??? it seems healthy full bubble tips, and so far * been in my tank for 4 days ) has eaten two big meals of silversides. anyhting i can do to help it get big???? thanx alot

 

[finding nemo]

Go, just keep feeding her and she will grow, they grow fast most of the time.
Any pics?