Strange leaf blade droop/bend in veg, cannot ID cause

[natureschild]

Have glues in week 3-4 of veg, they developed a strange, downward bend in the upper fan leaves that developed 12 days ago and has not gone away/corrected itself.

We've been running these in this system for awhile, have not had this happen before. Tried flushing but did not correct problem and runoff readings look ok.

I did recently runout of a 5 gallon jug of ionic grow that I had been using for about a year. Is it possible the ass end of nutes in there messed the plants up?

 

[liquidcooled420]

How are the roots doing? Looks like it could be a root problem with some of the plants. That one leaf down is new to me though, definitely strange.

Also,might want to check for broad mites if you haven't already

 

[natureschild]

Roots are full and fluffy white.

 

[liquidcooled420]

If the roots are nice and healthy and no broad mites, it could be something with the nutrients. Maybe try a foliar spray to help them bounce back. Possible the last bit of ionic grow had gone bad

Something with the environment could be off also, look into Vapor Pressure Deficit. You said that you've been running this system for awhile so it must be something that has changed recently that is causing this. Sometimes new hoses or plastic things brought into the room can cause off-gassing.

 

[Jofo1]

Perhaps vapor pressure deficit.

 

[Dankwolf]

Appears to be white spots on leafs ? Possable thrips?
Also maybe a bit of over watering ?
Appears there is not enough light due to leaf rinkel?

Ya i cant spell for shit lol.