Fluval 45 Gallon Bowfront lighting Alternatives

I've been trying to get corals going in my tank for a while now, some of them do ok, I have some trumpets that have split a few times from the original 4 I now have about about 9, but everything else seems to really struggle, even Zoas and anthelia, I'm thinking my lights might be contributing to the problem, but finding an alternative light source is proving to be a big challenge.

Anyone have any recommendations on a light source that would provide more features and be a good fit in this tank?

Thanks