Green Slimer issue

[dcw1sfu]

Hey guys just got back after two weeks away and everything in the tank looks good except for my green slimer. Its got about a 1 inch around bleached area. The base below it is fine and retained its color and everything above also is fine. All my params are stable the only thing maybe... is the toadstool beside it touching that area? Any ideas? Should i chop above the bleached area and re-attatch the healthy top?

params:

Calcium 430
Alk 8.2
Salinity 1.026
temp 79
Ph 8.0-8.2
magnesium 1380
Phostphates .012 (hanna ulr)
nitrates .02