You will hear the word no a lot, you need halides. I have 440w
of VHO and have a crocea about 8" below the water line and a
tear drop maxima about a foot from the water line. The crocea
has been in there for 2 years and the maxima about 8 months.
both are growing. I believe the color temperatue is important.
All of my bulbs are 10K. You should do fin, might need to keep it high in the rock works.