So I'm just germinating 3 x Barney's LSD and 3 x Barney's Tangerine Dream. I just have one LED panel at the moment, but plan to buy another in 10 days. The existing one is just finishing off a Nirvana PPP, which has around 6 weeks of flowering left. I'm toying with the idea of just doing them 12/12 as that's what the PPP is on, but I'm a bit worried the yield just won't be there. I'm not in a rush to harvest, so wondered if you guys could comment on the viability of having seedlings on 12/12 for a week or so, then going to standard photoperiod. Would they start the flowering cycle and go past the point of no return, or would it be possible to let them 12/12 for a week and then switch to say 18/6 or 20/4 and then revert to "veg mode"? I've only grown a few times, so apologies for the noobiness of my post!