Autoflower yellow tips

[Wulves]

Gelato auto 5 week old auto
FoxFarm Happy Frog
Water PH 65
SpiderFarmer SF2000
36 inches high.
Temps 75°
Humidity 55%to60%
Only fed one time week 4
FF Big Bloom
FF Grow Big
And the tips of the plant have a lot of Yellow Tips.
Any suggestions or diagnosis?
Thank You.

 

[Listersmeghead]

Gelato auto 5 week old auto
FoxFarm Happy Frog
Water PH 65
SpiderFarmer SF2000
36 inches high.
Temps 75°
Humidity 55%to60%
Only fed one time week 4
FF Big Bloom
FF Grow Big
And the tips of the plant have a lot of Yellow Tips.
Any suggestions or diagnosis?
Thank You.

Hiya wulves
I sometimes get new growth coming in a bit yellow, it can just sort itself as it grows.
Everything you're doing looks on point.
You could try 6.3 ph, so as the soil reverts back to 7, it'll get the full range of nutrients.
Lastly, do you have a way of checking your light intensity? The leaves are slightly raised at the edges, this can be caused by heat or light intensity. Light intensity can also cause leaf curl on fresh growth.Your temperature looks ok, so might be worth checking the light.
I use spider farmer lights, they're strong..at the moment I've got 3 young plants under a sf1000 at 24", and that's only 100w, the sf2000 is 220w?
I know you've got it at a good distance but it's worth checking.
Don't panic, it's doing really well over all, just little tweaks.

 

[Wulves]

Thank you . I'll work the PH . And keep a distance or 36 inches from the light.
No don't have anything to measure light intensity.
Thanks again

 

[Listersmeghead]

I've got a cheap little lux meter to check light intensity. You can also download apps for your phone.
Not essential, but very useful.

 

[Wulves]

I'll look into one ,thank you.
I'm not very tech savvy but I'll read up on it