Yeah, if you're getting great results why fuck with it? In my case things aren't quite ideal so I'm still tweaking shit. I'm running 5400/144=38W/sq ft of COB LED @60% so with 80 degree lenses it's a lot of light lol
So I've been thinking about this theory of lower amount of light/photons/PPFD extending the flowering and there looks to be a correlation right in this round. At least with the COBs as the CMH didn't seem to matter how small or large the footprint was, always finished consistently on the lower end time-wise.
Although I had a total of 600w running at 1400ma across ~3 x 8', the footprints were different and more concentrated on the far end/back of the room. At the back I have 2x T2-1400's but of the newer model with 3x 3590's per bar or 150w each. Those were covering a section about 3 x 3.5'. Towards the front I had 3x T2-1400's @100w each (2x COBs per bar in the older model) spread out further and covering more like 3 x 4.5'.
What got me thinking this was the one's at the back under the 300w over 2x T2-14000's are maturing at normal rates, not extended like the first batch I pulled at the front of the room. That Blue Ripper F2/P3, Blue Dream, JTR and Plemon should have been at least a week less based on previous runs. They were all at the front of the room with 300w spread across a larger footprint.
The Blue Ripper F2/P5, Blue Pyramid, and Blue Ripper x Harlequin will all be pulled around Day 49-55 which is more in line for when they should finish. All 3 of these were at the far end of the room with more concentrated light/photons hitting them than the plants towards the front. Previous pheno of the Blue Pyramid had been finishing at 49-55 days, same as the Harlequin and that Blue Ripper x Harlequin looks, smells and has behaved more like the Harlequin mother so a short run pheno would make some sense.
The other interesting observation and I've seen some posts about this. The plants at the front of the room (less light overall across the 3 x 4.5' footprint) that I've been pulling this week were all very good production for the plant size coming in. So although the run was extended, the production was as good or possibly better. Terps/quality didn't seem affected at all on either end of the room, I have 1x 2gal Blue Ripper F2/P3 at one end, and another 3 gal F2/P3 towards the front, both awesome frost and terps.