Never seen this before ???????? Could be a Problem????

[Pops]

GSC and MI5
5 gal fabric pots filled to 4 gal
OF and black gold soil 50/50 12cups bone meal 2 cups worm castings.
19/5 hps
only water first 3 weeks.
At the base of both plants i saw this today when taking photos today.
GSC

MI5

MI5

Is it because they are growing fast??
lose skin like a snake?
Pops

 

[Waira]

...perfectly normal dude, as the stalk expands, the outer cuticle layer may shed off as newer material is laid down,..

 

[Pops]

...perfectly normal dude, as the stalk expands, the outer cuticle layer may shed off as newer material is laid down,..

ok cool
thanks very much
Pops