Yup they're GBOG. They're 6 weeks in on Thursday. I reckon they going to go for 9 total tbf. I've got a 10K sunpulse finishing bulb I've aquired from a pal. I'm going to throw that in from the end of the 7th week till finish.
I read you mention yours had a big stretch? Mine didn't stretch too much. I reckon the stretch comes from the blueberry. I remember another friend of mine growing that back in the early 2000s and it was always massive. He used to grow one plant in a flo-gro 500 under a 600w HPS and pull 14OZ off it. How does yours smell? Mine really fruity with a hint of skunk. Can't wait to try some :)