Sorry for the nubie question. I just got my first cap frag and I put it in the middle of my tank not too high not to low. I have 2 t-5s 1 tru blue 1 50-50 that run from 7am-10pm and 2 400watt m/h that run from 4pm-9:30pm. Is it safe to have in the middle under moderate flow. Also should I glue this down like others or just let it grow? This is a 90 gallon