Burnt shortcake - frag? iodine? move? what to do?

[Duckhams]

Alk has been solid at 9.5 dKH. Lowered from 10.2 over a month. Im thinking its from an increase in red/green LED's on the radion's that did it along with a 5% increase on intensity. I could be wrong though.
I just don't want to lose it and the tips are getting algae on them. I don't want to risk moving it and causing more damage. I've lowered the light intensity and Red/Green LED's and will trim the exposed tips off as best I can and hope it recovers.