New Grower Bad looking single leaf on one plant.

[shovel1966]

Hello.
I have 6 different auto flower strains in a small indoor grow in 11 liter cloth pots under Kind LED series series 2 450w. Using living organic soil and natural organic nutrients. It’s their 8th week and 4 are in full flower. The other two are a bit behind, but in preflower stage. There is plenty of ventilation and air extraction, day temps of about 28 and night at about 22. It’s been hard to keep my humidity down and hovers between 60 and 65%.
All is looking great and then I see this lone leaf on one of the plants. Does anyone here recognize what may cause this?
Im not really worried. I just snipped it off and am wondering.

 

[namvet25]

Was this the only one?

 

[Jackson]

What’s ur ph?

 

[shovel1966]

Was this the only one?

Yes, this is the only leaf I see in this condition.

 

[shovel1966]

What’s ur ph?

I either use distilled water from my dehumidifier or collected rain water pHd to 6.5 of 6.6 using General Hydroponics pH Up and pH Down.

There has been no other leaf problems like this.

 

[namvet25]

I either use distilled water from my dehumidifier or collected rain water pHd to 6.5 of 6.6 using General Hydroponics pH Up and pH Down.

There has been no other leaf problems like this.

If it's only one leaf don't worry,but there will be more as they come to the end of there life cycle.