Yes, most definitely! Fiberglass has a long
history of being repaired. The repairs work well!
Think boats after a hurricane. Although some wrecks are
taken to the landfill, a larger majority are repaired at
boatyards or by the owners themselves.
Small holes in fiberglass can be repaired as well as large
cracks. Even if a fiberglass septic tank is split
completely in half it is repairable. The repair, if done
correctly, will last as long as the surrounding fiberglass to
which it is bonded.
My fees for fiberglass repair are on this website. Go there>