Is this a nute deficiency?

Percula · Jan 18, 2023

Hi All-
New grower here. Trying to determine if I have something to worry about.
Strain is Mac n Jack
Coco/Perlite
FF Grow Big at 1/4 recommended strength for the first 2 weeks, now up to 1/2 strength. I've added Microbe Brew occasionally, but I don't know if it does anything in Coco. I' have CalMag but I use tap water so...
Temp is steady at 78. RH is 60.
I see purple stems and yellow tips. Phosphate def? Magnesium def?
Any Info will be greatly appreciated!

2Bad · Jan 18, 2023

How close is your light

Percula · Jan 18, 2023

I'm using 2 Sylvania 20 watt plant bulbs (My HLG is on the way) 14" above.

Gmix · Jan 18, 2023

Strange light colour.
Apart from that your getting another anyways
All I see is a little tip burn where they had enough food for a bit how old that is only you know.

Might be best to only water next time & cut back on the nutes

GreenGalaxyFarm · Jan 19, 2023

would stick with 1/2 strength nutes using weak light, when you proper light come gradual increase
how often are you feeding

Percula said:
I'm using 2 Sylvania 20 watt plant bulbs (My HLG is on the way) 14" above.

Percula · Jan 19, 2023

I'm feeding once per week at 1/2 strength. The light is arriving today. Question about the photoperiod: They have been under 24 hour light. If I cut back to 18/6, would that induce flowering or is it the 12 hour darkness that does that?

Cirroji · Jan 19, 2023

Percula said:
I'm feeding once per week at 1/2 strength. The light is arriving today. Question about the photoperiod: They have been under 24 hour light. If I cut back to 18/6, would that induce flowering or is it the 12 hour darkness that does that?

i run my photos at 24hr in veg, 18/6 just saves me some electricity.

plants look fine, the yellowing of the tips is very slight nute burn (aka more than needed so no def)

GreenGalaxyFarm · Jan 19, 2023

Percula said:
I'm feeding once per week at 1/2 strength. The light is arriving today. Question about the photoperiod: They have been under 24 hour light. If I cut back to 18/6, would that induce flowering or is it the 12 hour darkness that does that?

generally yes 12/12 will induce flowering, some strain require less than that
or if you are growing sativa dominant you may wish to lower flowering time by reducing lights on

Is this a nute deficiency?

Is this a nute deficiency?

Percula

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2Bad

Percula

Gmix

GreenGalaxyFarm

Percula

Cirroji

man i'm just a hotdog

GreenGalaxyFarm

Is this a nute deficiency?

Is this a nute deficiency?

Percula

Attachments

2Bad

Percula

Gmix

GreenGalaxyFarm

Percula

Cirroji

man i'm just a hotdog

GreenGalaxyFarm

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