unable to pinpoint problem - require other opinions - 3 easy ryder, ww & mekong high

okay so 3 easy ryders, a white widow and mekong high 3 weeks today from planting.

the easy ryders are auto flowers whilst the ww and mek-h are standard.

they have given me some trouble this lot, the autos were very nute sensitive at 2ml/pl of bio-grow and it was my fault the first one shown:
easy ryder


may have died, i flushed it with around 4l of water way more than recommended, just trying to see if i can kick start it back to life three fan leaves fell off the top is rather damaged.

the next one:
easy ryder 2


had the stem broke off at its first/second node, i figured i may as well try topping it since there was no way it could repair itself.

easy ryder 3:


couldnt figure out what exactly was wrong, im thinking a magnesium and boron deficiency? possibly molybdenum on the new leaves?

white widow


again im thinking the same as the easy ryders.


mekong high


125w blue spectrum cfl, yet to install basics as new grow area.

so what in everyones opinion could it be?

Looks like you nute burnt the crap out of them. I'd flush that soil with some 6.5 PH'd water.

dude, just read it in the moisture stress sticky. i'll flush tonight, thanks.

ok so flushed the plants but there exactly the same, the ww looks worse, the runt however looks better. the water is slightly acidic to neutral so it cant be that. anyone?

looks like your using some kinky soil from your backyard...or a 100% organic soil witch makes it too compact when watered and doesn't allow oxigen to be assimilated by roots...may turn in to root rot and is a pain in the ass.

Change soil

using bio bizz all mix mixed with john innes 2 to dilute down for the seedlings if it helps, okay how do i change the soil without damaging the rootball? all i can find is how to change the ph level