Discolored Top Leaves

Indoor Growing Climate
1

I’ve noticed my top leaves are not the same color as lower leaves. Also, the seem to be growing spindly with some yellowing in newer leaves. Is this an issue?

I have been watering about a gallon with FoxFarm nute schedule every 10 days when the top layer of soil is dry.

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What strain: AK47 Autofem
Method: FoxFarms Ocean Forest
Vessels: Fabric 5 Gal pots
PH of Water: Around 6-6.5 after adding nutes
PPM/TDS: 2200 PPM in runoff
Indoor
Light system: HLG120H54A
Temps: 79F day, 68F night
Humidity: 70% - 80%
Ventilation system; Yes, 4" duct fan
Dehumidifier, but not currently using
Co2: Carbon filter with duct fan

2

Your PPM is very high. I would throttle your feedings until PPM comes back down.

It is normal for newer growth to be a lighter color than older foliage.

Otherwise looking very healthy.

3

Great thanks! I thought the PPM might be high…I actually didn’t even feed them the first month. Only fed once. Also, my grow tent is pretty small and they currently take up all the lateral space. Should I switch to flower stage soon?

4

If you are pushed for space, then flipping to flower earlier will work out better for you. Cannabis is mature enough to flower at some point between 4 and 7 weeks from the seedling stage.

5

Perfect, thank you!