Just cant seem to get the aquarium glass clean (inside)

[DEAD_BY_DAWN]

So with the purchase of new KZ superblue bulbs the colour in the corals really stood out as welll as the fact that my glass is cloudy and no amount of scraping will remove it.
Tryed all the normal methods algae magnets etc etc .
It looks cloudy not scratched just a very light "cloudyness" all over the front Payne possible mineral build up ?.
Its more evident when the Superblues are on .
Any thoughts on removing this .
Thanks