Aqua illumination Optics, To Change or Not To Change

[jumplittlechloe]

I have one sol blue over a 34g solana. The tank is 20x20x20 and I have the light 9" above the water line. Most of my corals are sps with some lps toward the bottom. Many have suggested changing the optics to 70 degree to reduce hot spots and avoid bleaching. I have the 70 degree optics to change them out, but I am interested to hear others opinions before I make the change.