thanks for all the posts there really helpful.
I may try one of these par38 bulbs and holder form aquaworld and just see how they go.
I will also probably run the standard light as it is all white and dimmable so will be able to adjust to what I like.
also with most nano led units out there today in the shops eg dymax, leo ect, lack in the blue spectrum so the par38 is looking pretty good to me at the moment. I may also add a diy blue red and green mix led where I can adjust the colours to get more of a range on the spectrum.
im just growing softies. zoas, mushrooms, star pollyps ect