New Grower leaves curling under??? what reasons

[Dominas999]

I dont want to keep starting threads about things that maybe obvious to most... But this is my first grow under lights with nutes... I have a single Auto Wembley under 250 hps and with 10" fan and great ventilation got a constant temp of 69 F. and a RH of 33%, root zone sitting at 6.7 watering with distilled water and feeding every 3 waters

The colour of all the leaves are a lush green with lighter green for newer growth but the leaves are curling under...

Most threads say under watering... Too much watering...... Not enough nutes... (I thought leaves pointed up when its too hot to hold as much moisture) so am a bit confused and dont wanna try with the wrong solution...

Pics below... Poor light but can see the curve on the leaves...

Any help is appreciated

 

[namvet25]

I would raise your temp to around 80f if you can.Also your humidity is pretty low try and get that higher.If your sure your not over watering than I would say your giving her too many nutes.What are the npk values of your nutes,looks like too much nitrogen to me.

 

[Dominas999]

I have raised the humidity to 44% now and temp is at 79.9 atm. I bought flora pro series and a mate mixed it up so couldnt tell you the values... Can you recommend a ml/l ratio for GH flora series as I cant understand the side of the bottle being honest...

 

[namvet25]

The dosage chart says ml per 10 litres of water. The 18 hr chart is for veg and the 12hr chart is for flowering.I would use half the reccomended dose to be safe.

 

[Dominas999]

Ok thankyou... Sorry to be a pain