not all that experienced but I think this is a great idea and good thread to have around. The fan trick might work most of the time but if you were to see my seedlings you would understand that sometimes its too late... I put a fan in there to try and correct the stretching and it made two of the ten bend over beyond 45 degrees and away from the light even... didnt look good so i propped them up with some wire. Everyone is a bit surprized to hear of PM on tiny seedlings and insisting that I must have overwatered, I dont think that is the case, but I did also not mention that the one that has that spot of PM had quite the early traumatic experience/near death as I will explain:
day 3 after germination I had every seed come up but two, and all were germinated before being put in jiffy pellets and had good roots about half an inch long when they were put in. I dug down to see why 2 didnt pop and I found that one had grown a second main root or something and was actually pushing its seedpod downwards with that and had no hope at all of survival, I pulled it up from what I thought was the main root and discovered that there was in fact a second root shooting straight down(still it would probably never have emerged with the way it was pushing a root strait up and not with the seed leave so not a stem) and that main root got ripped clean off right at the seed. This is on a 2 1/2 day sprouted seed... so I was like fuck its probably gunna die but I did my best and planted it back in the soil with the seedpod just poking out of the jiffy. and it grew quite well, its about 2 days behind the other seedlings but is otherwise perfectly healthy, must have rerooted and all was good. but I think the trauma and fingers all over it and all that gave an easy way in for mold spores and took advantage of this, now it has a small speck that doesnt look bad but Im not going to just ignore it and lose it again if I dont have to. In fact in some ways it is the healthiest of the bunch as it did not stretch as much as the others because I had the light down lower by the time it came up.
I will transplant and be sure to bury up close to the seed leaves sometime tommorrow assuming I can get my bigger veg room setup in time.
THanks alot for this great technique hopefully I will never have to use it again !