many mini bubbles on the tank's seam

[ifarmer]

hi everyone,

I bought the new marineland 93g cube a few months ago. Today I took it outside to do a leak test for the first time.
while outside in the sun light, I noticed on the tank seams (all seam) have these many mini white bubbles.

should I be worry with these? this is a new tank, just testing water for the first time.

thanks

 

[ifarmer]

Anyone have had experience with this type of problem? Thanks