Removing my link is only a pitty for people searching for LED info but anyway.
Plagron Lightmix you use as I had just read?
I have bought the same last week, germinated seeds, put them in this mix (RQS Royal Critical and my famous Northern Lights RQS) exactly 7 days ago and I am very disappointed with the size of leaves and overall growth. I use 18l pots and wattered only once with 1-1,5 l water with Hesi Root Complex and Powerzyne both half of recommended amount.
T: 22,6 C, RH : 64%, I run 350 w LED on 70% power so that it takes app.120W. The distance is 80cm.
last two or three days I have started to be concerned a little bit. All 3 NL alos had long issues with removing shells while RC was more succesfull.
I learnt a while ago after having the same problem with shells if you plant it a little deeper say 3cm they have enough time to release the casing before sprouting.
We have a section dedicated to LED growers https://www.autoflower.org/f138/ would be cool if you could start a diary that way we can help if you have any problems and also get to see your new lights in action oh and we won't have to hijack ermlights thread anymore too lol. Don't take having you link taken down personally it's the same rules for everyone and we are just trying to keep SPAM in check.