1st DWC - Haze Strain - Leaf Tips Curling Downward

[Splicer102]

Hey all. This is my 2nd grow. 1st time with DWC. Haze strain. Sativa dominant. They've been growing for about 65 days. I just flipped the lights to 12/12. The leaf tips on my plants are curling downward. They've been doing that for pretty much the entire grow to some extent although not as pronounced as they are now, and even then it varies from plant to plant. I'm not sure if that's a sign of some kind of issue. They seem to have grown fairly well, and haven't had much issue other than my battle with maintaining PH, which I believe I have under control.
Using:
2 900W LED lamps (about 18 inches away)
4 65W LED providing light on sides
5 gallon buckets (3 gallons of water)
2 airstones each

Nutrients: (All at recommended dose)
GH CaliMagic
GH Micro,Flora, Bloom
Hydroguard
Great White Mycorrhizae
PH stays fairly steady ~5.8-6.0

How do my girls look? Any help or advice is appreciated..

 

[Airwalker16]

Hey all. This is my 2nd grow. 1st time with DWC. Haze strain. Sativa dominant. They've been growing for about 65 days. I just flipped the lights to 12/12. The leaf tips on my plants are curling downward. They've been doing that for pretty much the entire grow to some extent although not as pronounced as they are now, and even then it varies from plant to plant. I'm not sure if that's a sign of some kind of issue. They seem to have grown fairly well, and haven't had much issue other than my battle with maintaining PH, which I believe I have under control.
Using:
2 900W LED lamps (about 18 inches away)
4 65W LED providing light on sides
5 gallon buckets (3 gallons of water)
2 airstones each

Nutrients: (All at recommended dose)
GH CaliMagic
GH Micro,Flora, Bloom
Hydroguard
Great White Mycorrhizae
PH stays fairly steady ~5.8-6.0

How do my girls look? Any help or advice is appreciated..

They're fine. It's most likely a genetic trait from the Haze. I've run blueberry strains and they all do that.