What Is Causing This?

[Longhair]

Hello,
This Has Been Going On About 10 Days. The Fan Leaves (Only Affected) Are Drooping. Tips Curling Down. Sides Of Leaves Are Curling Down & In. Like An Upside Down Boat. They Are Turning Yellow. I'm Pretty Sure It's A Form Of Lock Out. Need To Know Whats Being Locked Out & How To Correct This. I've Included Pics.

White Widow 19 Days Into Flowering
400 Watt MH & Some CFLs
DWC Rez Temp: High 50sF To High 60sF
Tent Temp: 75F To 85F
PH: 5.0 To 6.6
Nutes: Dyna Gro Bloom At 1/8th Of Recommended.

Thank You
Longhair

 

[fatigues]

This should be in the Cannabis Infirmary forum.

You'll have a lot more luck there than here.

 

[Duckmang]

May be that 5.0 is too low of a ph. I try to shoot for 5.8 to 6.0 in my coco grow. I recently mixed a few batches of nutes without calibrating my ph meter. Turns out that my meter was reading really high, so I ended up mixing my nutes at a really low ph. I had similar leaf damage, curling down, browning, and even total leaf loss. I have several strains and noticed that some fared a lot worse than others from this low ph.

 

[Longhair]

May be that 5.0 is too low of a ph. I try to shoot for 5.8 to 6.0 in my coco grow. I recently mixed a few batches of nutes without calibrating my ph meter. Turns out that my meter was reading really high, so I ended up mixing my nutes at a really low ph. I had similar leaf damage, curling down, browning, and even total leaf loss. I have several strains and noticed that some fared a lot worse than others from this low ph.

Thank You
Longhair

 

[Mickymouse]

Whats your EC. 1/8 doese of fertz seams to low

 

[Mickymouse]

May be that 5.0 is too low of a ph. I try to shoot for 5.8 to 6.0 in my coco grow. I recently mixed a few batches of nutes without calibrating my ph meter. Turns out that my meter was reading really high, so I ended up mixing my nutes at a really low ph. I had similar leaf damage, curling down, browning, and even total leaf loss. I have several strains and noticed that some fared a lot worse than others from this low ph.

Use Sunleaves drops they never lie to you.

 

[MAZEinaHAZE]

are your temps OK Longhair ??

Lock out is a real good start....if thats the issue, then no worries - totally fixable !!

 

[chytil151]

I tossed my Ph meter after it broke a month after I bought it, once i started using the drops I don't think i will stop using them now they don't lie an there is nom calibration needed