Me personally i would reseal it too,just incase,for what it should cost its a no brainer really.
I had my 180 set up for 5 years and then moved house and just chose the time to reseal as it shouldnt need doing for another ??? Years.
Also ive got a 190g sump in our shed and its been down to -10 here and after seeing this i will be resealing it before it gets used,just incase.
Steve
