Silicone seams - integrity

[marcan]

My 55G tank has white "lines" on the silicone seams.
The seams look fine from the inside and when I touch it, everything is one continunous smooth seams without any hole or spot.

The tank is 3 year old.
Any ideas why there's white spots/lines? Should I be worried?

 

[kno4te]

wednesday13

 

[wednesday13]

I know nothing of glass past re sealing… some tanks i did myself had air gaps in the silicone like this and they ran fine while i had them. Backfromthedead may be able to offer some better insight

 

[marcan]

I'll keep an eye on it

Thanks wednesday13