slow growth check up

[HippyDi]

I am a newbie with 2 outdoor harvests under my belt. Decided to do indoor hydroponic during the winter.
I am on day 12 from germination day 9 from sprout. I am worried she is growing too slowly and that I'm messing it up. She looks relatively healthy although not as deep green as I am used to. First true leaves are a little wavy.
Please let me know if I'm on the right track. Stems are purple and always have been so I think it's genetics as the strain I'm growing can be colourful.
Started with a humidity dome as it is dry here. Sorted out my humidifier, now out of dome.

Here are my specs;

Hydroponic ebb and flow. Flooding 3 x a day.
Substrate: germinated in Vermiculite and perlite mix, in netting pot, with clay balls surrounding.
Lights: 400w HPS duel spectrum (needed heat) 18/6 at 40cm (16in) above plant
Nutes: general hydroponics flora series diluted for seedlings
Ppm 150
Ph 5.5 to 6
Ec 0.35
Temp: 23 Celcius (73f) lights on 15 Celcius (59f) lights off
RH: 55%
I have an oscillating fan that blows gently

I don't know if I'm just being paranoid. Please help





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[HippyDi]

Forgot to add. Strain is lemon kush headband fem seed

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[Nanook]

15 is a bit low imho - how old?

[GMO]

Well, let's start with a very warm welcome straight off the bat

Nows it kinda looks like everything is ticking along very nicely but are you nutrient measure the ppm/ec above background or are you using RO water?

I'd say she looks more than ready for upping that feed level and you'll have a happy lil lady, mate

translated from the bongo of the canna jungle

[GMO]

Oooh, well spotted nan. A lil low

translated from the bongo of the canna jungle

[Bulls]

I'd say yes lights off temperature is too low - if you can't maintain it with heater please consider switching your lights to 24/7. Also increase the distance between plants and light a little bit. They are a bit too young. And your EC is a bit too low I think. I'd wait for you answer it you're using RO water or just you tap water is really soft.

[HippyDi]

Thank you so much everyone. I am using tap water, my water is soft. I've got the nutes for soft water. I will raise my light a bit. It's so darn cold at night. But will see if I can make a plan with a heater. Thank you. Suggest increasing nutes now?

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[Nanook]

whats your background tap water ec mate? I tend to use 0.3 over background

[Bulls]

If you're planning to use heater - you will be better of running the lights 24/7
If you're lights are out at night maybe switch the light cycle so your lights off to be in a day time(it's warmer)
I'd give them a couple of feeds at ec 0.5 and take photos with the lights off(use camera flash)

[HippyDi]

Ec of tap water is 0.065. Not super clued up on how to get the ec up without just adding nutes.
Good idea to swap the light cycle or 24hrs. I will try. And take better pics:)

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