alage in silicone

[BIGBRU]

I just aquired a 180 oceanic the question is I see some algae in the silicone(see pics first is tank, second inside seam third outside). Tanks has been setup and running for about 7 years, and does not leak. Is this ok to go like this, or what? thanks

 

[joedodge]

hmmm idk that silicone looks a lil ragged and white to me i think id reseal it fo looks and reasurance but let some others post opinions also