Thorn 4' 40w Kolor-Rite - Lit - Cracking

I put this into full-time use today, I figure I might as well get some use out of it rather than it just sitting in the collection as I've found a problem with it. Yes you've guessed it... there's a crack developing at the etch end. It's also fairly well used anyway.

You can see the crack in the picture, just above the hand written year '18' on the cap.

Let's see how long it lasts...