A lot of the less green Leptos do good in lower light. I keep my JF Klepto Lepto in full shade. 24K often prefer lower third. Leptastrea can do well closer to the sand bed as do Micromussa Lordhowensis and Blastomussa. Lots of Favias can handle lower light, some even prefer it - my Dragon Soul and Reverse Prism both have their best colors sitting on the sand bed. My Blastos sit on the sand under a shelf.